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VERB
减少；减小；减轻
If you reduce something, you make it smaller in size or amount, or less in degree.
例句
It reduces the risks of heart disease...
这降低了患心脏病的风险。
Consumption is being reduced by 25 per cent...
消费下降了25个百分点。
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VERB
使沦为，使陷入（不好的境地）
If someone is reduced to a weaker or inferior state, they become weaker or inferior as a result of something that happens to them.
例句
They were reduced to extreme poverty...
他们陷入极端贫困的状态。
They wanted the army reduced to a police force.
他们想把这支队伍降级为一支警察部队。
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VERB
迫使;使不得不（做）；使只得
If you say that someone is reduced to doing something, you mean that they have to do it, although it is unpleasant or embarrassing.
例句
He was reduced to begging for a living.
他不得不以乞讨为生。
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VERB
使变成;使简化为
If something is changed to a different or less complicated form, you can say that it is reduced to that form.
例句
All the buildings in the town have been reduced to rubble...
城里所有的建筑都成了废墟。
Politics has been reduced to class struggle.
政治变成了阶级斗争。
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V-ERG
（烹调中）使变浓稠，收汁
If you reduce liquid when you are cooking, or if it reduces, it is boiled in order to make it less in quantity and thicker.
例句
Boil the liquid in a small saucepan to reduce it by half...
用小炖锅炖，收一半汤汁。
Simmer until mixture reduces.
用小火煮到汤汁收浓。
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PHRASE
境况变差;生活拮据
If you say that someone is living in reduced circumstances, you mean that they do not have as much money as they used to have.
例句
They are the descendants of emperors and kings and are now living in reduced circumstances.
他们是帝王的后代，但是现在境况大不如前了。
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PHRASE
使…无言
If someone or something reduces you to silence, they make you feel so upset or confused that you cannot speak.
例句
Her challenge reduced them to silence.
她的质问让他们哑口无言。
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PHRASE
使…落泪
If someone or something reduces you to tears, they make you feel so unhappy that you cry.
例句
The attentions of the media reduced her to tears.
媒体的关注把她弄哭了。