笑氣麻醉可以保持清醒，經常用於牙科。。。幾年前我兒子在UCLA拔智齒時用的一氧化二氮

來源: 禦用文人於 2014-03-03 07:00:49 [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.