parents和parents有什么区别

　　Children need their parents.

　　孩子们需要父母。

　　Each unit including the parent company has its own, local management.

　　包括母公司在内，每个单位都有自己的地方管理层。

　　Parent birds began to hunt for food for their young.

　　亲鸟开始为幼鸟寻找食物。