与人初次见面时，闲聊是非常管用的。

Small talk is extremely useful when first meeting others.

youdao

实际上，这个借口非常管用，我打算在孩子们结婚很长时间后继续用它。

In fact the excuse works so well I plan to keep wielding it long after the children are married.

youdao

我发现，提前计划或跟朋友搭伙非常管用，这样可以消耗掉购买的东西，避免浪费。

I've found that it helps to plan ahead of time and combine forces with friends so that I consume what I buy instead of wasting it.

youdao

But it's amazing, that every year you find somebody coming up with a way of going around the second law and somehow convincing people who are very smart that this will work.

但是很令人惊奇，每年你都能发现,有人宣称找到了,绕过第二定律的方法,还不知怎么地就说服了,一些非常聪明的人,让他们以为这个真的管用。

麻省理工公开课 - 热力学与动力学课程节选

Very useful in that respect.

自卫非常管用。

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