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Critical difference
Critical difference

Chapter III

Cover illustration for Critical difference
Context Illustration Reading 1/86 · 5 lines
English subtitles · tap any word to listen 1 / 5
He settled down at Herndon's desk to work out the thing to be done.
It was not unreasonable.
Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.
If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.
If the water-table were low, water couldn't flow fast enough.
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AI-generated narration by OpenAI · Slow US English
LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

Critical difference

Chapter III

Reading 1/86 · 5 reading units · Lines 1–5

Line 1
He settled down at Herndon's desk to work out the thing to be done.
Line 2
It was not unreasonable.
Line 3
Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.
Line 4
If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.
Line 5
If the water-table were low, water couldn't flow fast enough.

Learner Dictionary

Oxford-style entry order: headword, part of speech, US IPA, concise definition, contextual example, audio, and collocations from this reading.

Could modal verb US /kʊd/

the past of “can”; used for possibility or polite requests

From this reading “If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.”

Done noun US /done/

an important story-specific word used in this passage

From this reading “He settled down at Herndon's desk to work out the thing to be done.”

One pronoun US /wʌn/

used to mean any person in general, including the speaker

From this reading “If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.”

Pipe noun US /pipe/

an important story-specific word used in this passage

From this reading “Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.”

Something pronoun US /ˈsʌmθɪŋ/

a thing, without saying which

From this reading “Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.”

Thing noun US /thing/

an important story-specific word used in this passage

From this reading “He settled down at Herndon's desk to work out the thing to be done.”

All words in this reading · 47

Every word is available to listen to. Dictionary details are shown only when verified; these are not licensed Oxford entries.

adeterminerUS /ə/

used before a singular noun to mean one of a group, when it is not a particular one

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

andconjunctionUS /ənd/

used to join words or parts of a sentence that go together

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

atprepositionUS /æt/

in or near a particular place or position

From this reading He settled down at Herndon's desk to work out the thing to be done.

beauxiliary verbUS /biː/

used with a past participle to form the passive, or with -ing for continuous tenses

From this reading He settled down at Herndon's desk to work out the thing to be done.

couldmodal verbUS /kʊd/

the past of “can”; used for possibility or polite requests

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

couldn't

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table were low, water couldn't flow fast enough.

desk

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading He settled down at Herndon's desk to work out the thing to be done.

donenounUS /done/

an important story-specific word used in this passage

From this reading He settled down at Herndon's desk to work out the thing to be done.

down

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading He settled down at Herndon's desk to work out the thing to be done.

enough

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table were low, water couldn't flow fast enough.

fast

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

flow

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table were low, water couldn't flow fast enough.

forprepositionUS /fɔːr/

intended to be given to, or used by, somebody

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

force

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

HepronounUS /hiː/

a man, boy, or male animal already mentioned, as the subject

From this reading He settled down at Herndon's desk to work out the thing to be done.

Herndon's

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading He settled down at Herndon's desk to work out the thing to be done.

high

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

IfconjunctionUS /ɪf/

on condition that; in the event that

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

inprepositionUS /ɪn/

inside something, or within a place, period, or state

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

ionosphere

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

ItpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading It was not unreasonable.

like

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

low

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table were low, water couldn't flow fast enough.

notadverbUS /nɑːt/

used to make a word, phrase, or sentence negative

From this reading It was not unreasonable.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

onepronounUS /wʌn/

used to mean any person in general, including the speaker

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

out

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading He settled down at Herndon's desk to work out the thing to be done.

pipe

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

pipe-well

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

power

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

pressure

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

pump

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

pumping

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

sand

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

settled

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading He settled down at Herndon's desk to work out the thing to be done.

somethingpronounUS /ˈsʌmθɪŋ/

a thing, without saying which

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

Tapping

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

thedeterminerUS /ðə/

used before a noun that is already known, already mentioned, or the only one of its kind

From this reading He settled down at Herndon's desk to work out the thing to be done.

there

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

thingnounUS /thing/

an important story-specific word used in this passage

From this reading He settled down at Herndon's desk to work out the thing to be done.

toparticleUS /tuː/

used before the base form of a verb to make the infinitive

From this reading He settled down at Herndon's desk to work out the thing to be done.

unreasonable

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading It was not unreasonable.

wasauxiliary verbUS /wɑːz/

the past form of “be” used with I, he, she, it, or a singular noun

From this reading It was not unreasonable.

water

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Tapping the ionosphere for power was something like pumping water out of a pipe-well in sand.

water-table

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading If the water-table was high, there was pressure to force the water to the pipe, and one could pump fast.

wereauxiliary verbUS /wɜːr/

the past form of “be” used with you, we, they, or a plural noun

From this reading If the water-table were low, water couldn't flow fast enough.

work

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading He settled down at Herndon's desk to work out the thing to be done.