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昨天晚上去gym的路上,娃问我一个问题,我回答的不好,上来征求好的答案
peterfl
(Pl)
娃问,红绿灯的绿灯亮时为什么行人的小白人要在绿灯亮之前人为地按下才亮,没有及时按下就必须等下一轮。绿灯应该和小白人同时亮。我说blah blah。。。。最后我补充到你说得有道理
(#11117375@0)
Last Updated: 2017-10-17
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昨天晚上去gym的路上,娃问我一个问题,我回答的不好,上来征求好的答案
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