我觉得马达是对的,儿子是负载，是消耗而不是提供能量　：－）

来源: 野生动物摄影家于 2012-03-07 11:36:58 [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.