trade-off（tradeoff）表示权衡，折中，语境中可翻译为鱼与熊掌不可兼得。
常见表达句式 a trade-off between A and B
例句:
1. Deciding which modules to display in the phenomenal English, Wechat menu is a matter of trade-off.
2. Life is full of trade-offs, you cannot have your cake and eat it too.
3. There must be a trade-off between quality and quantity for many manufacturers.
4. But leaving the EU inevitably involves difficult trade-offs.
作业:
1. 翻译:
The decision is a trade-off between efficiency and cost.
2. 场景: 对大部分女性来说工作和生活是很难平衡
It is a difficult trade-off between work and life for most women.
