what it takes is just a tank of compressed air to adjust itself.

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送交者: steven 于 2008-09-29, 16:52:25:

回答: 伴星能这么紧跟这还绕着飞没有动力不大可能吧？ 由 HunHunSheng 于 2008-09-29, 16:43:23:

Since it doesn't last very long, it doesn't matter.


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