都江堰真是中华民族的杰作，自豪。要了解它的设计原理，因势利导，而不是人定胜天。伟大！

来源: shparis 于 2025-12-10 08:43:53 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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