[N-COUNT 可数名词]减少；减小；降低 A decrease in the quantity, size, or intensity of something is a reduction in it.
[oft N in/of n]
...a decrease in the number of young people out of work...
失业青年人数的减少
Bank base rates have fallen from 10 per cent to 6 per cent — a decrease of 40 per cent.
银行的基本利率已从 10% 降到了 6%，降幅高达 40%。
Oxford
de·crease★
verb
,
noun
decreasedecreasesdecreaseddecreasingverb★/dɪˈkriːs; NAmEdɪˈkriːs/[intransitive , transitive ]( rather formal) to become or make sth become smaller in size, number, etc. （使大小、数量等）减少，减小，降低decrease(from sth) (to sth) ◆The number of new students decreased from 210 to 160 this year.今年新生人数从 210 减少到 160。◆a decreasing population逐渐减少的人口decreaseby sth ◆The price of wheat has decreased by 5%.小麦价格降低了 5%。decreasein sth ◆This species of bird is decreasing in numbers every year.这种鸟的数量在逐年减少。decreasesth ◆People should decrease the amount of fat they eat.人们应减少脂肪的摄入量。OPP
increase
noun★/ˈdiːkriːs; NAmEˈdiːkriːs/[countable , uncountable ]the process of reducing sth or the amount that sth is reduced by 减少；降低；减少量SYN
reduction
decrease(in sth) ◆There has been some decrease in military spending this year.今年的军费开支有所减少。decrease(of sth) ◆a decrease of nearly 6% in the number of visitors to the museum参观博物馆人数下降将近 6%OPP
to become less or go down to a lower level, or to make something do this → reduceOPP increase: The number of people who have the disease has decreased significantly in recent years. They want to decrease their reliance on oil.decrease by Average house prices decreased by 13% last year.decrease to By 1881, the population of Ireland had decreased to 5.2 million.decrease from The North’s share of the world’s energy consumption is expected to decrease from 70% to 60%.decrease in Attacks of asthma decrease in frequency through early adult life.GRAMMARDecrease belongs to a group of verbs where the same noun can be the subject of the verb or its object.• You can say: · They decreased the number of buses. In this sentence, ‘the number of buses’ is the object of decrease.• You can say: · The number of buses decreased. In this sentence, ‘the number of buses’ is the subject of decrease.Grammar guide ‒ VERBSCOLLOCATIONSadverbssignificantly (=enough to be an important change)· Violent crime has significantly decreased over the last ten years.considerably/substantially (=a lot)· During this period unemployment decreased considerably.markedly (=very noticeably)· Aircraft collisions decreased markedly during the 1990s.rapidly (=very quickly)· Since then, elephant numbers have been decreasing rapidly.dramatically (=suddenly and a lot)· The survival rate decreases dramatically as the disease progresses.slightly (=a little)· Population levels actually began to slightly decrease five years ago.steadily (=gradually and continuously)· The proportion of adult cigarette smokers has been steadily decreasing.THESAURUSdecrease to become less in number or amount: · The average rainfall has decreased by around 30 percent.go down to decrease. Go down is less formal than decrease and is the usual word to use in conversation: · Unemployment has gone down in the past few months.decline formal to decrease – used with numbers or amounts, or about the level or standard of something: · The standard of living has declined.· Support for the government is steadily declining.· Salaries have declined by around 4.5%.diminish to become smaller or less important: · Union membership diminished from 30,000 at its height to just 2,000 today.fall/drop to decrease, especially by a large amount. Fall and drop are less formal than decrease: · The number of tigers in the wild has fallen to just over 10,000.· At night, the temperature drops to minus 20 degrees.plunge /plʌndʒ//plummet /ˈplʌmət/ to suddenly decrease very quickly and by a very large amount: · Share prices have plummeted 29% in the last four months.· Climate change could cause global temperatures to plummet.slide if a price or value slides, it gradually decreases in a way that causes problems – used especially in news reports: · The dollar fell in late trading in New York yesterday and slid further this morning.dwindle /ˈdwɪndl/ to gradually decrease until there is very little left of something, especially numbers or amounts, popularity, or importance: · Support for the theory is dwindling.taper off /ˈteɪpə $ -ər/ if a number or the amount of an activity that is happening tapers off, it gradually decreases, especially so that it stops completely: · Political violence tapered off after the elections.
the process of becoming less, or the amount by which something becomes lessOPP increaseSYN reductiona decrease in something Teachers reported decreases in drug use and verbal abuse of teachers.a decrease of 50/5% etc There has been a decrease of 1 degree in average temperature.THESAURUSdecrease used when the number, amount, or level of something becomes less than it used to be: · There has been a significant decrease in the number of deaths from lung cancer.· a 5% decrease in housing pricesreduction used when the price, amount, or level of something is made lower: · There will be further price reductions in the sales.· A small reduction in costs can mean a large increase in profits.cut used when a government or company reduces the price, amount, or level of something: · a 1% cut in interest rates· tax cuts· It is possible that there will be further job cuts.drop/fall used when the number, amount, or level of something goes down, especially by a large amount: · The figures showed a sharp fall in industrial output.· There was a dramatic drop in temperature.decline used when the number, amount, level, or standard of something goes down, especially gradually: · During the 1970s, there was a gradual decline in the birthrate.· a decline in educational standards
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