我奇怪当年老美从德国人手里山寨并改进的火箭技术能登月，现在怎么造不出来了呢？连图纸都不见了，让猫叼了去吗？

来源: 头发与财富成反比于 2015-05-29 12:13:41 [旧帖] [给我悄悄话] 本文已被阅读：次

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