你必须把它交给爷爷,他会告诉你怎么处理的。
You must give it to grandfather and he'll tell you what to do with it.
你把你的剩饭交给猪,它帮你处理掉,而你得到肉。
You give your leftovers to the pigs, they deal with your rubbish, and you get meat.
当条件发生时,处理器可以选择去处理它或是把它交给下一个处理器处理。
When that condition happen, a handler can choose to handle it, or pass it along to the next handle.
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