gas maskˈgas mask noun [countable] 
a piece of equipment worn over your face to protect you from poisonous gases, especially during a war
a piece of equipment worn over your face to protect you from poisonous gases, especially during a war
| 单词 | gas mask |
| 释义 | gas maskˈgas mask noun [countable] a piece of equipment worn over your face to protect you from poisonous gases, especially during a war |
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