释义：a balance between two opposing things, that you are willing to accept in order to achieve something.
例句
Deciding which modules to display in the Phenomenal English WeChat menu is a matter of trade-off.
Life is full of trade-offs. You cannot have your cake and eat it too.
A trade-off betewwn an increased qualities and the reduce of quantities.
句型
最常见的表达句式是“a trade-off between A and B”
翻译：
This decision is a trade-off between efficiency and cost.
造句
There is a trade-off between the price and quantity for most consumers.
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