trade-off

"Trade-off"是一个短语，由两部分组成：`trade` 和 `off`。`Trade`的词根是古英语 "tradan"，意为交换。`off`则是表达“离去”或“离开”的英语词，来源于古英语 "of"。

["n. 交换，交易；权衡；协定"]

There is a trade-off between the benefits of the drug and the risk of side effects.

在这种药的疗效和副作用之间有个权衡利弊的问题。

Evolution has repeatedly made this trade-off.

进化一再做出这种取舍。

In the past we had to have a taste trade-off.

在过去，我们必须在口味上有所取舍。

Doctors can face some grim trade-offs

你可以把"trade-off"想象成一个交易（trade）过程，在这个过程中你必须放弃（off）一些东西。这样一种关联记忆的方式会有助于你对"trade-off"的记忆。

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So if you look at security from economic terms,it's a trade-off.Every time you get some security, you're always trading off something.

And so we have to figure out how they balance those two things.Different people trade offbetween standing by their outcome,

you run up against what computer scientists callthe "explore-exploit trade-off."You have to make a decision

computer scientists have made a lot of progress understandingthe explore/exploit trade-off,and their results offer some surprising insights.

so colonies are different in howthey manage this trade-offbetween spending water to search for seeds

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