成年人应该这样。如果有幼儿，老人，病人，适当调高

来源: fuz 于 2017-10-11 06:30:03 [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.