What else could make him behave so out of character?

Under certain conditions, electrons can behave like waves rather than particles.

在一定条件下，电子可以作波状运动，而不是粒子状运动。

You have to behave.

你得规矩点。

Nobody who comes to this club is allowed to behave like a prima donna.

加入这个俱乐部的任何人都不许自以为是。

It's incredible that Peter can behave with such stupid lack of feeling.

彼得行事如此麻木不仁，真是难以置信。

They were expected to behave themselves.

他们应该守规矩。

By studying the way people behave, we can theorize about what is going on in their mind.

通过研究人们的行为方式，我们可以从中推断他们内心的想法。

She was trying to behave as if his visit hadn't thrown her off balance.

她尽力装作对他的造访并不吃惊。

They behave with a total lack of inhibition.

他们表现得毫无顾忌。

I would never have expected her to behave in such an underhand way.

我从未想到她的行为竟如此阴险。

I have never known him to behave any other than selfishly.

我就没见过他不自私的时候.

The children do not know how to behave themselves decently.

小孩子不懂如何举止得体.

Parents are humiliated if their children behave badly when guests are present.

子女在客人面前举止失当,父母也失体面.

Repression made him behave worse.

受抑制使他表现得更糟.

He can't be allowed to behave like that; I meant to say, he's a grown man.

不应该准许他有那样的举止, 我是说他已经是成年人了.

If you don't behave yourselves I'll box your ears!

你们若不规矩,我会打你们耳光的!

The children behave well.

孩子们行为良好.

It's surely overstepping the mark to behave so rudely to your guests.

你对客人如此粗鲁真是太过分了.

If you behave so foolishly, you must be ready to take the consequences.

如果你这样愚昧下去, 你必须准备自食其果.

The new fighters behave gallantly under fire.

新战士在炮火下表现得很勇敢.

I'll wring your neck if you don't behave!

你要是不规矩,我就拧断你的脖子.