Englishfor English speakers
fluctuation
Noun
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A fluctuation is when something changes back and forth quickly.
The price of wheat stayed the same, but there were a lot of fluctuations in the price of rice.
Every time a cloud goes past, there is a fluctuation in the amount of sunshine.
field
Noun
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A field is an open area of land that can be used for many different things, from sports to crop-growing.
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A field is an area of study or work.
He was an expert in the field of American history.
field
Verb
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If you field something, you answer it; you address it.
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If you field the team, you place them in the game.