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TOEFL IELTS BNC: 4237 COCA: 3370
decreaseverb [ I or T ]uk/dɪˈkriːs/ us/ˈdiː.kriːs/

B1 to become less, or to make something become less（使）减少；（使）下降；（使）降低

Our share of the market has decreased sharply this year.今年我们的市场份额急剧下降。
We have decreased our involvement in children's books.我们减少了在儿童读物方面的投入。
Opposite
increase

More examples

During the 1980s, the amount of ozone in the stratosphere above Europe decreased by about 8%.

Total unemployment has decreased in the past year.

The pop star's popularity decreased as he got older, which is only to be expected.

The government proposed decreasing the annual expenditure on arms.

To make the sleeve get narrower toward the cuff, you gradually decrease the number of stitches on your needle.

decreasenoun [ C or U ]uk/ˈdiː.kriːs/ us/ˈdiː.kriːs/

B1 a reduction减少；下降；降低

There has been a steady decrease in the number of visitors.来访者数量持续减少。
I haven't noticed much decrease in interest.我并未发现人们的兴趣有大幅下降的趋势。

More examples

There was a slight decrease in his weight after a week of dieting.

Any decrease in tourism could have a serious effect on the local economy.

The report's finding on the decrease in violent crime supports the police chief's claims.

We have seen a marked decrease in the number of accidents since these safety measures were introduced.

We've noticed a steady decrease in jobs available for new graduates in the industry.

TOEFL IELTS BNC: 4237 COCA: 3370
decrease

noun

ADJECTIVE | VERB + DECREASE | PREPOSITION ADJECTIVE➤dramatic, drastic, great, large, marked, sharp, significant, substantial急劇減少；大量的減少；驟降；明顯減少◇There has been a sharp decrease in pollution since the law was introduced.自從推行這項法規之後污染已經大大減少。➤modest, slight, small適度的／輕微的／小規模的減少▸➤gradual, progressive, steady逐漸的／漸次的／穩步的減少➤rapid, sudden快速／突然減少▸➤corresponding, relative相應的減少◇Fewer houses are available, but there is no corresponding decrease in demand.房子供應減少，但需求沒有相應減少。➤general, overall總體減少➤threefold, tenfold, etc.三分之二、九成等的減少➤5%, 25%, etc. * 5%、25% 等的減少VERB + DECREASE➤demonstrate, display, exhibit, indicate, reveal, show表明減少；顯示減少◇This year's figures show a decrease of 30% on last year.今年的數字顯示比去年減少了三成。➤experience, have, suffer減少◇It is not uncommon to experience a decrease in confidence after a divorce.在離婚後信心減少是很常見的現象。➤report報告減少◇Half the companies in the survey reported a decrease in sales.調查中有一半公司表示銷售有所減少。➤cause, lead to, produce, result in引發／導致／致使／造成減少PREPOSITION➤on the decrease在減少◇Marriage is still on the decrease.結婚人數仍在減少。➤decrease from... to...從⋯減少到⋯◇a decrease from 62% to just under half從 62% 減少到不足一半➤decrease in在⋯方面的減少◇The new treatment led to a huge decrease in the number of deaths.新療法使死亡人數大大減少。➤decrease of（某幅度）的減少◇a decrease of 20%20% 的減少
decrease

verb

ADVERB | PREPOSITION | PHRASES ADVERB➤considerably, dramatically, drastically, greatly, markedly, sharply, significantly, substantially大量減少；急劇減少；驟減；顯著減少▸➤slightly, somewhat略微減少◇Spending has decreased slightly this year.今年的花費略有減少。➤rapidly迅速減少▸➤progressively, steadily逐漸／穩步減少▸➤gradually, slowly逐步減少PREPOSITION➤by降低 ( 某幅度 )◇Crime has decreased by 20%.犯罪活動減少了 20%。➤from, to從⋯降低；降低到⋯◇Average family size has decreased from five to three children.家庭平均規模從 5 個孩子降到了 3 個。➤with隨着⋯降低◇The number of quarrels among children decreases with age.孩子年齡越大，吵架的次數就越少。PHRASES➤decrease in number, size, value, etc.數量減少、尺寸變小、價值降低等◇The heart gradually decreases in size.心臟逐漸變小。
TOEFL IELTS BNC: 4237 COCA: 3370
decrease noun
⇨ reductiondecrease verb
⇨ fall 1 (Donations have decreased.) ⇨ reduce (The dose was gradually decreased.)
TOEFL IELTS BNC: 4237 COCA: 3370
decrease
To become less in size, amount or value: crater, decrease, decline...
To reduce something: cut back, cut down, reduce...
Rates of decrease and the process of decreasing: decrease, reduction, decline...

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