oxygen mask

漢語翻譯

英文解釋：

名詞 oxygen mask:

1. a breathing device that is placed over the mouth and nose; supplies oxygen from an attached storage tank

例句：

1. If air is needed, the oxygen mask in the plane will pop down by itself.
   如果空氣缺乏，飛機內的氧氣面罩會自動放下。
2. An oxygen mask will come down from overhead in case of an emergency.
   若發生緊急情況，頭頂上會降下一隻氧氣面罩。