Decrease和reduce有什么區(qū)別？

reduce是一種主觀的減少、降低，主語是使減少的外力，to make something smaller or less in size, amount, or price。
decrease是一種客觀的減少、下降，主語是減少的東西（size, amount, or price etc.）,to go down to a lower level, or to make something do this。

拓展資料

?decrease

1、verb

~ (from sth) (to sth)

（使大小、數(shù)量等）減少，減小，降低?
to become or make sth become smaller in size, number, etc.

[V]?The number of new students decreased from 210 to 160 this year.

今年新生人數(shù)從210減少到160。

The price of wheat has decreased by 15%.

小麥價格降低了15%。

This species of bird is decreasing in numbers every year.

這種鳥的數(shù)量在逐年減少。

a decreasing population

逐漸減少的人口

[VN]?People should decrease the amount of fat they eat.

人們應減少脂肪的攝入量。

反義詞：?increase

2、noun

[C,?U]?~ (in sth) | ~ (of sth)

減少；降低；減少量?
the process of reducing sth or the amount that sth is reduced by

同義詞：?reduction

There has been some decrease in military spending this year.

今年的軍費開支有所減少。

a decrease of nearly 6% in the number of visitors to the museum

參觀博物館人數(shù)下降將近6%。、

reduce

1、verb

[VN]?~ sth (from sth) (to sth) | ~ sth (by sth)

減少，縮小（尺寸、數(shù)量、價格等）?
to make sth less or smaller in size, quantity, price, etc.

Reduce speed now (= on a sign) .

減速行駛。

Costs have been reduced by 20% over the past year.

過去一年，各項費用已經(jīng)減少了20%。

Giving up smoking reduces the risk of heart disease.

戒煙會減少得心臟病的風險。

The number of employees was reduced from 40 to 25.

雇員人數(shù)從40人減少到了25人。

The skirt was reduced to ￡10 in the sale.

在大減價期間，這條裙子減價到10英鎊。

2、[VN?,?V]?（使）蒸發(fā)?

if you reduce a liquid or a liquid reduces , you boil it so that it becomes less in quantity。

to lose weight by limiting the amount and type of food that you eat.

a reducing plan

節(jié)食計劃

4、[VN]?(chemistry 化)?使還原?

to add one or more electrons to a substance or to remove oxygen from a substance

compare?oxidize.