当工程师发现机器停止工作，他停下来查看出了什么错。
When the engineer found the machine stopped working, he stopped to check what the.
应急停车系统能使机器在紧急情况下迅速停止工作。
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。
An emergency shut-down system enables the engine to be stopped in an emergency.
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