clam up

I don't understand why my students are quite talkative during the break but all clam up in class .

我不明白为什么我的学生在课间休息的时候都滔滔不绝，而课堂上倒沉默不语。

Every time they were used, the detainee would clam up as they were scared that anything they said would make that pressure increase.

每次使用它们时，受审者都保持沉默，好像他们害怕一旦说了什么，就会加重所受压力。

The hit singles and No 1 album have, evidently, not made her clam up for fear of adverse publicity.

热门单曲和专辑销量第一也不能使她闭口不谈对不当宣传的担心。

martha: When Joe and Lisa splitting in each other's throat, why did you clam up without speak up for Lisa?

玛莎：当乔和丽莎正扯着喉咙吵架时，为什么你要保持沉默而不开口为丽莎说话？

clam up for no reason , huh ? - we ' ll see.

没理由不开口的，哦？-我们等着看吧。

Whenever John walked by, Mary got so nervous she would just clam up.

每当约翰走过时，玛丽总是紧张得说不出话来。

It started off well, but he seemed to clam up towards the end.

刚开始很，但是最后他似乎有些沉默。

Don't clam up on me. What happened?

别不说话，发生什么了？

I don't mean to pry, so there's no. need to clam up on me.

我并不想要探听什么，因此你不必对我守口如瓶。

You can't talk with those peasants. They can clam up as well as the Foreign Office.

你不能跟那些农民谈话。他们象外交部一样，可能一点口气也不漏。

This is why, when under the pressure of problems or stress, a man will clam up and stop talking.

所以说，遇到难题或紧张压力时，男人会缄默不语。

But if users realise how their data are used, they may clam up.

但是，一旦用户意识到他们的数据是怎样被使用的，他们可能就会缄口不言了。

They are afraid he's going to clam up on them.

他们担心他将对他们守口如瓶。

Don't clam up just when the story is getting interesting.

别到故事正有趣时就不讲了。

You can't clam up. And you don't want to stutter and stammer.

你不想一声不吭，也不想结结巴巴。

You're not gonna clam up until I explain this, are you?

我不解释，你是不是就不打算闭嘴拉？

I don't understand why my students are quite talkative during the break but all clam up in the class

我不明白为什么我的学生们在休息时候很健谈，一到上课就很沉默

My insides crawl and I clam up

我和我的内里爬起来蛤、

And I clam up, I just slam shut

我拒不开口，紧闭我的嘴