沒必要。除非到人擠的封閉空間。

來源: borisg 於 2020-01-23 17:21:15 [博客] [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.