fumes ·noun
Definition: strong, unpleasant, and often dangerous gas or smoke Level: C1
汽车尾气是城市空气污染的重要贡献者。
Car exhaust ___fumes are a significant contributor to air pollution in cities.
工业过程经常释放需要适当通风的危险烟雾。
Industrial processes often release dangerous ___fumes that require proper ventilation.
工作场所接触化学烟雾可能导致严重的健康问题。
Exposure to chemical ___fumes in the workplace can lead to serious health issues.