10-30每日一词

trade-off：a balance between two opposing things, that you are willing to accept in order to achieve something.   

例句：Deciding which modules to dispaly in the Phenomenal English WeChat menu is a matter of trade-off.

也可以写成 'tradeoff“）是个可数名词，意思是“权衡”“折中”

trade off 动词。

a trade-off between A and B

（也可以写成 'tradeoff“）是个可数名词，意思是“权衡”“折中”

Life is full of trade-offs. You cannot have your cake and eat it too. （“You cannot have your cake and eat it too.”一句口语中比较常见的英文谚语，表示“鱼与熊掌不可兼得”）

There must be a trade-off between quality and quantity for many manufacturers.

But leaving the EU inevitably involves difficult trade-offs.

1）This decision is a trade-off between efficency and costs.

参考翻译：The decision is a trade-off between efficiency and cost.

Cost!?Costs!?

2) All the college students have to face the  trade-offs between study and club activities.

The period of study is full of trade-offs and only the seduous person who is never defeated by the obstacles can study well.