Residents heard an enormous bang as a safety valve on the boiler failed.

当锅炉的一个安全阀失灵时，居民们听到了一声巨响。

《柯林斯英汉双解大词典》

Catharsis is theorized to be a safety valve.

经理论证明，宣泄是一种疏导情绪的方式。

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Loyalism thus operated as a safety valve to remove socioeconomic discontent that existed among the rebels.

因此，忠诚就像一个安全阀，消除了存在于叛军中的社会经济不满。

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If Frederick Jackson Turner had anything right in "The Frontier Thesis", although he didn't pay hardly any attention to the South, this idea of a safety valve of a West to move to was surely there for slavery.

如果弗雷德里克·杰克逊·特纳,在《边境论》中有什么正确的言论,那就是,尽管他对南方几乎没有施以任何关注,即这个西进运动是一道安全阀的构想,显然是为奴隶制而设的

耶鲁公开课 - 美国内战与重建课程节选

Could the movie become a safety valve, encouraging its fans to let off steam?

NEWYORKER: Borat

Or perhaps, since the clever stuff can go wrong, ballot-stuffing is a safety valve.

ECONOMIST: Election fraud

America's growing trade deficit is a safety valve: it has prevented domestic demand from spilling over into inflation.

ECONOMIST: If Japan should crash