If an engine ingests a bird, it must be able to shut down safely without bursting into flames or exploding.

如果发动机吸入一只鸟，它必须能够安全关闭，不发生突然起火或爆炸。

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The more powerful front engine already had been shut down earlier to save fuel.

功率更强大的前引擎已经在早先被关闭，以节省燃料。

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An emergency shut-down system enables the engine to be stopped in an emergency.

应急停车系统能使机器在紧急情况下迅速停止工作。

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FracFocus was never designed to serve as a comprehensive data gathering tool for activist groups whose real desire is to shut down the most significant economic-driving engine America has seen over the last decade.

FORBES: Harvard's Frack Disclosure Study Earns an 'F'