Chain the receiving objects and pass the request along the chain until an object handles it.

将接收对象串联成链，请求在链上传递，直到被一个对象处理。

youdao

Chain the receiving objects and pass the request along the chain until an object handles it.

将接收对象串联成链，请求在链上传递，直到被一个对象处理。

youdao