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TOEFL BNC: 567 COCA: 701
reduceverb [ I or T ]uk/rɪˈdʒuːs/ us/rɪˈduːs/

B1 to become or to make something become smaller in size, amount, degree, importance, etc.减少；减小；降低；缩小

Do nuclear weapons really reduce the risk of war?核武器真的可以减小战争爆发的危险吗？
The plane reduced speed as it approached the airport.当飞临机场时，飞机减慢了速度。
My weight reduces when I stop eating sugar.我停止吃糖时体重就会下降。
We bought a TV that was reduced from £500 to £350 in the sales.我们在大减价时，买了一台从500英镑减至350英镑的电视。
I reduced the problem to a few simple questions.我把这个难题简化为几个简单的小问题。

to heat a liquid until it becomes thicker and less in quantity; to become thicker and less in quantity in this way（通过加热）使（液体）变稠；（液体因加热而）变稠

Reduce the sauce by boiling for five minutes.煮沸5分钟让调味汁变稠。
Simmer until the liquid has reduced by about one third.加微热直到液体减少三分之一。

More examples

The government has pledged to reduce the amount of chemicals used in food production.

Wearing the correct type of clothing will reduce the risk from radiation.

When one airline reduces its prices, the rest soon follow suit.

Mindful of the poor road conditions, she reduced her speed to 30 mph.

We are firmly committed to reducing unemployment.

Idiom(s)

reduce, reuse, recycle

Phrasal verb(s)

reduce sb to sth
reduce sth to sth
TOEFL BNC: 567 COCA: 701
reduce

verb

ADVERB | VERB + REDUCE | PREPOSITION | PHRASES ADVERB➤considerably, dramatically, drastically, greatly, markedly, severely, sharply, significantly, substantially大量減少；急劇降低；明顯減少；嚴重降低；大幅降低➤successfully成功地減少▸➤further進一步減少▸➤slightly略微降低◇We need to reduce the speed slightly.我們需要稍稍降低一下速度。➤gradually, progressively逐漸減少；逐步降低◇Legislation progressively reduced the number of situations in which industrial action could be taken.通過立法逐漸減少了罷工、怠工的發生。➤quickly, rapidly迅速減少VERB + REDUCE➤aim to, attempt to, seek to, try to致力於減少；試圖減少；力求減少▸➤help (to)幫助降低◇Giving up smoking helps reduce the risk of heart disease.戒煙有利於降低患心臟病的可能。➤manage to設法成功地減少▸➤be designed to, be intended to旨在降低▸➤be expected to, be likely to預期／很可能減少PREPOSITION➤by減少⋯◇Pollution from the works has been reduced by 70%.工廠污染減少了 70%。➤in在⋯方面減少◇I noticed that my belly had drastically reduced in size.我注意到我的肚子小了不少。➤from, to從⋯減少；減少到⋯◇The price is reduced from 99 cents to 85 cents.價格從 99 分降到 85 分。PHRASES➤an attempt to reduce sth, an effort to reduce sth降低⋯的努力▸➤measures to reduce sth縮減⋯的措施▸➤reduce sth to a minimum把⋯降到最低◇The risks must be reduced to the absolute minimum.風險必須降到最低。
TOEFL BNC: 567 COCA: 701
reduce

verb

  ➡ See also the entry for cut 1 另见cut条第1义reduce ♦︎ lower ♦︎ minimize ♦︎ decrease ♦︎ bring sth down ♦︎ turn sth downThese words all mean to make sth smaller or less in size, amount or degree. 这些词均表示减少、缩小、降低。PATTERNS AND COLLOCATIONS 句型和搭配◆to reduce sth / lower sth / bring sth down from 10 to 5◆to reduce / lower / decrease sth by half, 50, etc.◆to reduce / lower / minimize / decrease / bring down the number / amount / level / cost of sth◆to reduce / lower / minimize / decrease the risk / chance / rate of sth◆to reduce / lower / decrease / bring down the price of sth◆to reduce / lower / turn down the volume / sound◆to reduce / lower / decrease sth significantly / gradually◆to reduce sth / turn sth down slightly■ reduce [transitive] to make sth less or smaller in size, amount, number or level 减少，缩小，降低（尺寸、数量、数目或水平）◆The number of employees was reduced from 40 to 25.雇员人数从40人减少到了25人。◆Costs have been reduced by 20% over the past year.过去一年，成本支出已经减少了20%。◆Giving up smoking reduces the risk of heart disease.戒烟会减少患心脏病的风险。◆Reduce speed now (= on a sign).减速行驶。 OPP increase ⇨ increase verb ■ lower [transitive] to reduce the level of sth 减低，降低（水平）◆This drug is used to lower blood pressure.这种药用于降血压。◆The company may be forced to lower prices in order to stay competitive.为保持竞争力，这家公司可能会被迫降价。◆He lowered his voice to a whisper.他压低了声音悄悄地说。ⓘ Lower is used especially in the contexts of health and finance. * lower尤用于医疗保健和金融语境◆to lower blood pressure / cholesterol levels降低血压／胆固醇水平◆to lower prices / interest rates降低价格／利率 Reduce can also be used in these cases; however, if you are talking about the level of sb's voice, only lower can be used. * reduce亦可用于这些情况。不过，表示降低说话的声音只能用lower◆He reduced his voice to a whisper. OPP raise ⇨ increase verb ■ minimize (BrE also minimise) ˈmɪnɪmaɪz [transitive] to reduce sth, especially sth bad, to the lowest possible level 使（尤指不好的事物）减少到最低限度◆Good hygiene helps to minimize the risk of infection.保持卫生清洁有助于最大限度地减少感染的风险。◆They worked at night in order to minimize the disruption.为尽可能减少干扰，他们在晚上工作。OPP maximize ⇨ increase verb ■ decrease [transitive] (rather formal) to reduce the amount or level of sth 减少，减小，降低（数量或水平）◆People should decrease the amount of fat they eat.人们应减少脂肪的摄入量。◆The dose was gradually decreased after eight weeks.剂量在八周后逐渐减少。 OPP increase ⇨ increase verb ⓘ Decrease is more formal and less frequent than increase; it is used especially in the contexts of health and medicine. The more usual opposite of increase is reduce. * decrease比increase正式，较不常用，尤用于医疗保健和医学语境中。increase更常用的反义词是reduce。■ ˌbring sth ˈdown

phrasal verb

(brought, brought)to reduce the price, number or level of sth 降低，减少（价格、数量或水平）◆We aim to bring down prices on all our computers.我们打算降低我们所有计算机的价格。◆The economic recovery will bring down unemployment.经济复苏将降低失业率。■ ˌturn sth ˈdown

phrasal verb

to reduce the noise, heat or light produced by a piece of equipment by moving its controls 把⋯调低；关小◆Please turn the volume down.请把音量调低些。◆He turned the lights down low.他把灯光调得暗了一些。 OPP turn sth up ⇨ increase verb   see also turn sth off ⇨ turn sth off
TOEFL BNC: 567 COCA: 701

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