When you put up your hands in class,the teacher knows you want to say something or ask questions.

问题描述:

When you put up your hands in class,the teacher knows you want to say something or ask questions.

当你在课堂上举手,老师就知道你有话要说或者要问问题。

这个好像可以用有道词琠翻译的!!有道。很强大的软件

当你在课堂上举手,老师就知道你有话要说或者要问问题.