一旦孩子们收到修正稿后，他们必须在下次上课前记住自己的演讲词。

Once students receive the revised document, they should memorize the speech before the next class.

youdao

一旦孩子们收到修正稿后，他们必须在下次上课前记住自己的演讲词。

Once students receive the revised document, they should memorize the speech before the next class.

youdao