1.翻译
This decision is a trade-off between efficiency and cost.
2. 情景
对小孩子来说，生活就是毫无顾虑地去得到他们想要的。但是对成年人来说生活充满了妥协。
For kids life is longing to gain what they want without scruple whereas everything is a trade-off for adults.
达成协议就相当于在做妥协，外交事务更是如此。
Striking deals is tantamount to making trade-offs; all the more so with those on diplomatic affairs.
