Question

reduce 和 decrease 有什么分别 ？

Answer 1

reduce 和 decrease 两个字虽然解 “减少”
有时可以互用 最大分别是 reduce 不是 noun
只可以做 verb
decrease 可以是 verb 和 noun decrease 多数用在 number
amount
size reduce 用途比较广. 尤其用在 abstract noun Population growth is decreasing by 1% each year. The number of people visiting the Ocean Park has decreased gradually. Her lawyers got the charge reduced from murder to mlaughter. ~ 不会用 decreased All the shirts were reduced to $50. ~ 不会用 decreased reduce 还有其他的 meaning. 下列 reduce 不可能使用 decrease 代替 使变为
使变弱
使陷落 The girl was reduced to tears [terror
silence] The old man is reduced to begging for a living. They were reduced from wealth to poverty almost overnight. Not all information can or should be reduced to a number. All the buildings in the town have been reduced to rubble. 【数学】简[约]化 You can reduce 2/4 to 1/2. Please reduce an equation to its simplest form 【化学】使还原 In the human body
nitrate is reduced to nitrite by the digestive system. The H+ ions
with an oxidation number of +1
are reduced to H2 Reduced price (折价)
不是 decreased price Reduced sentence (减刑) 不是 decreased sentence

参考: Collins English Dictionary
Reduce 是动词，人为干预，decrease 是名词，是现象，天作怪。
后者也用于数字。 The number decreased. tribuneindia/news/uttarakhand/number-of-students-in-t-schools-falls/65092
两个都可解作减少
但较常用reduce
后者用于百分比