教员向全班解释一个新问题时，应有大量的好例子使他把自己的意思讲清楚。

When explaining a new point to a class, a teacher should have a fund of good examples to make his meaning clear.

youdao

教员向全班解释一个新问题时，应有大量的好例子使他把自己的意思讲清楚。

When explaining a new point to a class, a teacher should have a fund of good examples to make his meaning clear.

youdao