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<0,0>--><50,0>--><100,0>-->Mars,所以是在第2s打到（闪电的速度为无穷大），如果你把mars当成柱子，那么闪电在第2s到达mars，在第3s时离开marsIn Reply To:谁能解释一下Sample 1 Posted by:yucai100 at 2010-04-04 14:05:20 rt Followed by: Post your reply here: |
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