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TOEFL IELTS BNC: 4237 COCA: 3370

decrease

verb
 OPAL W
/dɪˈkriːs/
/dɪˈkriːs/
[intransitive, transitive] (rather formal)
Verb Forms
present simple I / you / we / they decrease
/dɪˈkriːs/
/dɪˈkriːs/
he / she / it decreases
/dɪˈkriːsɪz/
/dɪˈkriːsɪz/
past simple decreased
/dɪˈkriːst/
/dɪˈkriːst/
past participle decreased
/dɪˈkriːst/
/dɪˈkriːst/
-ing form decreasing
/dɪˈkriːsɪŋ/
/dɪˈkriːsɪŋ/
jump to other results
  1. to become smaller in size, number, etc.; to make something smaller in size, number, etc.（使大小、数量等）减少，减小，降低
    • Donations have decreased significantly over the past few years.在过去几年里，捐款大幅减少。
    • a decreasing population逐渐减少的人口
    • decrease (from something) (to something) The number of new students decreased from 210 to 160 this year.今年新生人数从 210 减少到 160。
    • decrease by something The price of wheat has decreased by 5 per cent.小麦价格下降了5%。
    • decrease in something This species of bird is decreasing in numbers every year.这种鸟的数量在逐年减少。
    • to decrease in size/value 尺寸/价值减小
    • decrease with something Fertility decreases with age. 生育率随年龄增长而下降。
    • decrease something The drug did not significantly decrease the risk of heart attack.这种药物没有显著降低心脏病发作的风险。
    • People should decrease the amount of fat they eat.人们应减少脂肪的摄入量。
    • to decrease the incidence/likelihood/rate of something降低某事的发生率/可能性/比率
    opposite increase
    Extra Examples
    • Average family size has decreased from five to three children.家庭平均规模从 5 个孩子降到了 3 个。
    • Crime has decreased by 20 per cent.罪案减少了20%。
    • The heart gradually decreases in size.心脏逐渐变小。
    • Spending has decreased slightly this year.今年的花费略有减少。
    • The dose was gradually decreased after eight weeks.剂量在八周后逐渐减少。
    • The number of quarrels among children decreases with age.孩子年龄越大，吵架的次数就越少。
    • Symptoms include a dry mouth, decreased appetite, headache and tiredness. 症状包括口干、食欲下降、头痛和疲劳。
    Topics Change, cause and effectb2, Moneyb2
    Oxford Collocations Dictionaryadverb
    • considerably
    • dramatically
    • drastically
    • …
    preposition
    • by
    • from
    • to
    • …
    phrases
    • decrease in number, size, value, etc.
    See full entry
    Word Originlate Middle English: from Old French decreis (noun), decreistre (verb), based on Latin decrescere, from de- ‘down’ + crescere ‘grow’.

decrease

noun
 OPAL W
/ˈdiːkriːs/
/ˈdiːkriːs/
[countable, uncountable]
jump to other results
  1. the process of reducing something; the amount that something is reduced by减少；降低；减少量 synonym reduction
    • Sales for May show a decrease compared with the same month last year.与去年同期相比，五月份的销售额有所下降。
    • decrease in something There has been some decrease in military spending this year.今年的军费开支有所减少。
    • a decrease in the number/level/rate of something某物数量/水平/比率的下降
    • There has been a dramatic decrease in activity among our kids. 我们的孩子的活动急剧减少。
    • decrease of something (in something) There has been a decrease of nearly 6 per cent in the number of visitors to the museum.参观博物馆的人数减少了近6%。
    • decrease (from something) (to something) a decrease from 62% to just under half从 62% 减少到不足一半
    • on the decrease Marriage is still on the decrease (= decreasing).结婚率仍在下降。
    opposite increase
    More Like This Pronunciation changes by part of speechPronunciation changes by part of speech
    Extra Examples
    • Half the companies in the survey reported a decrease in sales.调查中有一半公司表示销售有所减少。
    • It is not uncommon to experience a decrease in confidence after a divorce.在离婚后信心减少是很常见的现象。
    • The new treatment led to a huge decrease in the number of deaths.新疗法使死亡人数大大减少。
    • There has been a sharp decrease in pollution since the law was introduced.自从推行这项法规之后污染已经大大减少。
    • This year's figures show a decrease of 30 per cent on last year.今年的数字显示比去年下降了30%。
    Topics Change, cause and effectb2, Moneyb2
    Oxford Collocations Dictionaryadjective
    • dramatic
    • drastic
    • great
    • …
    verb + decrease
    • demonstrate
    • display
    • exhibit
    • …
    preposition
    • on the decrease
    • decrease from… to…
    • decrease in
    • …
    See full entry
    Word Originlate Middle English: from Old French decreis (noun), decreistre (verb), based on Latin decrescere, from de- ‘down’ + crescere ‘grow’.

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