- 把…粉碎为，捣碎为；碾碎为：
A crushing machine reduces big rocks to powder.
粉碎机能把大石块轧成粉末。
- 换算成：
To reduce pounds to pence you multiply by a hundred.
镑乘以一百就折合成便士。
- 把…归纳为；把…简化为：
We can reduce his argument to three basic facts.
我们可以把他的论点归纳为三件主要事实。
- 使身体瘦弱；使精神衰弱:
Worry about the business reduced him to a nervous wreck.
生意上的烦恼事把他愁得不成人样了。
- 使丧失(尊严)；使陷入(困境)：
Most peasants were reduced to eating grass and leaves during the severe famine in 1934.
在1934年严重饥荒期间，大多数农民都吃草和树叶。
- 把(化合物)分解为：
This substance can be reduced to a single chemical and oxygen by passing an electrical charge through it.
通电后，这种物质可以被分解为一种单一的化学制品和氧。
- 把…降职为：
The head nurse was reduced to ordinary nurse due to malpractice.
这位护士长由于玩忽职守被降职为普通护士。
- 把…驳倒；把…贬得一文不值：
Her clever speech reduced the speaker's argument to nonsense.
她的机敏的发言把讲演人的论点驳成一派胡言。