缺乏發明是因為缺乏財富，工程師的性格應該是富裕的而不是短缺的。

來源: 黃大兵於 2019-10-10 22:44:27 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.