When I taught, I would assign a topic to children that they would write about.

教书时，我会给孩子们布置个写作题。

《柯林斯英汉双解大词典》

To assign a role within the collection to a topic.

在集合中指定主题的角色。

youdao

To assign a role within the collection to a topic.

在集合中指定主题的角色。

youdao