常识是,飞起来所需要的动力比船在海上航行所需要的动力大得多,因为除了要克服前进阻力,还要产生足够的升力来克服地心引力。
本帖于 2026-02-25 15:56:46 时间, 由普通用户 天青水蓝 编辑
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