常用动词有：

decrease 减少，减小 

diminish 减少，缩减

reduce 减少，减小 

depress 降低，压低

decline 下降，下倾 

lessen 减少，缩小

condense 浓缩，压缩

contract 缩小，缩短 

minimize 减到最少

cut down 削减，减少 

go down 下降，降低

fall off 减少，下降 

scale down 按比例减少

shrink 收缩，缩小 

shorten 缩短

常用名词有：

decrease， decline， reduction， diminution， depression， Shrinkage， condensation，scale-down

The weight has been reduced by 80 kg．

重量减少 80 公斤。

Opening the windows lessened the heat a little .

打开窗子可使热度稍微低一些。

Arise in temperature depresses solubility .

温度的升高降低了溶解度。

Several burners were removed， and the heating effect was diminished .

移去几只燃烧器，热效应便减弱了。

Washing wool in hot water will shrink it．

在热水中洗毛织品会使它收缩。

Metals contract when they lose heat．

金属失去热量时会收缩。

We can reduce the danger of over heating by 1Ubrication．

我们可用润滑的方法来减少过热的危险。

The reduction in the number of people working in the factory has caused difficulties .

工厂里工人人数的减少引起了一些困难。

As the voltage reaches a maximum， the current falls off to zero .

电压达到最高值时，电流下降至零。

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