The engines shut off automatically in an emergency.

遇到紧急情况发动机便自动停止工作。

《牛津词典》

Stay off all telephones except to report an emergency.

除了报告紧急情况外，请不要使用电话。

youdao

The capture vessels could take other jobs around the gulf, but on contracts that allowed them to break off immediately in case of emergency.

捕获船能围绕海湾接取其它工作，但签有在紧急状况下可立即中断的合同。

youdao

After receiving more than $180 billion in emergency federal assistance to stave off collapse, AIG recently gave top employees bonuses totaling $165 million - even as the company reported the biggest quarterly loss in U.S.corporate history.

VOA: standard.2009.03.24

Governors across New England and New York have declared states of emergency, and all cars and trucks -- except emergency vehicles -- must now be off Massachusetts and Connecticut roadways.

CNN: February 9, 2013 -- Updated 0314 GMT (1114 HKT)

Rhode Island Gov. Lincoln Chafee Saturday ordered all non-emergency vehicles off the streets Saturday so snowplows could clear roadways.

CNN: 635,000 without power as blizzard heads out to sea

Gov. Deval Patrick told nonessential state workers to stay home Friday and ordered all non-emergency vehicles off the road by 4 p.m.

WSJ: A state-by-state look at the Northeast blizzard