名词
中文翻译：气体
同义词：
['air', 'oxygen', 'hydrogen', 'nitrogen', 'carbon dioxide', 'helium']
例句：
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1. The gas leaked from the cylinder and filled the room.
气体从气筒泄漏出来，充满了房间。
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2. Gas is a common component of many foods.
气体是许多食物的常见成分。
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3. The firefighters used gas masks to protect themselves from the toxic fumes.
消防员们使用防毒面具来保护自己免受有毒烟雾的伤害。