When he gets nervous, he doesn't know what to say or do, so he just stands there looking scared.

他一紧张就不知道该说什么或者做什么，于是他就站在那里，显得很害怕。

youdao

When he gets nervous, he doesn't know what to say or do, so he just stands there looking scared.

他一紧张就不知道该说什么或者做什么，于是他就站在那里，显得很害怕。

youdao