每个儿童在联欢会中扮演一个动物。

Each child will represent an animal at the party.

youdao

一个男孩把动物玩具在我，当我扮演哑巴，然后跳上我，吻我一百万次。

A boy who will throw stuffed animals at me when I acted dumb and then jump on me and kiss me a million times.

youdao

任意一个生态系统中，各种植物和动物都扮演着特定的角色。

Plants and animals evolve to fill particular roles within a given ecosystem.

youdao