He pressed the red alarm signal to see if it was on or off.

他按了一下红色报警信号钮,检查一下它是开着的还是关着的.

辞典例句

What does the abandon ship alarm signal sound like?

如何描述弃船员讯号的响声?

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Criminal who specialize in stop alarm signal.

专门从事停止报警信号的罪犯.

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Designed and developed the ability to detect analog signals, and can generate alarm signal systems.

设计并开发能检测模拟信号, 并能产生报警信号的系统.

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The alarm signal was missing, because the fire had burned the control cable.

原因是控制电缆在大火中燃烧,导致报警信号不能发出.

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A float operated switch in the relay is used to initiate an alarm signal.

继电器内的浮控开关发动报警信号.

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