我奇怪當年老美從德國人手裏山寨並改進的火箭技術能登月，現在怎麽造不出來了呢？連圖紙都不見了，讓貓叼了去嗎？

來源: 頭發與財富成反比於 2015-05-29 12:13:41 [舊帖] [給我悄悄話] 本文已被閱讀：次

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