decrease

verb

OPAL W

/dɪˈkriːs/

[intransitive, transitive] (rather formal)

动词形式

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/

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
- 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
Collocations Dictionary
adverb
- considerably
- dramatically
- drastically
- …
preposition
- by
- from
- to
- …
phrases
- decrease in number, size, value, etc.
词源late Middle English: from Old French decreis (noun), decreistre (verb), based on Latin decrescere, from de- ‘down’ + crescere ‘grow’.

decrease

noun

OPAL W

/ˈdiːkriːs/

[countable, uncountable]

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 speech
Pronunciation changes by part of speech
- abuse
- alternate
- advocate
- approximate
- contract
- converse
- convict
- decrease
- delegate
- discount
- duplicate
- estimate
- export
- extract
- graduate
- import
- intimate
- moderate
- object
- permit
- present
- protest
- record
- refund
- refuse
- subject
- suspect
- survey
- torment
- upgrade
- 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
Collocations Dictionary
adjective
- dramatic
- drastic
- great
- …
verb + decrease
- demonstrate
- display
- exhibit
- …
preposition
- on the decrease
- decrease from… to…
- decrease in
- …
词源late Middle English: from Old French decreis (noun), decreistre (verb), based on Latin decrescere, from de- ‘down’ + crescere ‘grow’.