That explosion was triggered by an accumulation of gas in an unventilated tunnel.

爆炸是由于瓦斯气体在通风不良的矿井中聚集而产生的。

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They found that in unventilated Spaces levels can build up and, over time, cause health problems such as allergies and asthma.

研究表明，在不透风的空间里，时间长了，会影响健康，出现过敏、哮喘等症状。

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Some people criticized the passenger cabins for being hot and unventilated; others complained that the food in the area is too expensive.

有些人批评车厢闷热不通风，有些人则抱怨附近的饮食价格太高。

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As for the dorm, an employee said eight to 10 people live in a room smaller than 220 sq ft, which is cramped and unventilated.

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The buildings were considered pioneers in the "light-court" model of tenement development, intended as an alternative to the dark and unventilated tenements common at the time.

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With the idleness known only to childless couples on vacation, we'd squandered humid hours trying out vintage saxophones in the unventilated antique stores of a Hudson River town.

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