balance
翻译：这个决定是权衡效率和成本后的结果
The result is a trade-off between effectiveness and cost of this decision.
造句一：青少年的饮食讲究营养均衡。
The teenager's diet pays attention to trade off nutrition.
造句二：工作上要学会权衡轻重，不要捡了芝麻丢了西瓜
Working you have to learn a trade-off between important and unimportant, don't pennywise and pound-foolish.
a matter of trade-off
a trade-off between A and B
You cannot have your cake and eat it too.
鱼与熊掌不可兼得
Penny wise and pound-foolish
捡了芝麻丢了西瓜
