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He asked me for a lift.He was a hitch hiker .

他是一个乘便车的旅行者。

It has been known that taking actions to the incidents after they've happened can lead to unavoiding and uncontrolling of them. It's not a good way to do it in that case.

事实证明，群体性事件发生后才抓紧处理，造成不良后果才追究责任，这种方法是行不通的，必然导致群体性事件的更频繁发生和难以遏制。