然后大脑会忽然发出一个紧急信号，惊醒人们赶紧深呼吸一下。
The brain then suddenly sends an emergency signal, telling the person to wake up and take in a big gulp of air.
所有的这些都给阿拉伯-以色列和平调停传达了新的紧急信号。
All of this should give new urgency to Arab-Israeli peacemaking.
那天夜里，沃尔特熬夜到午夜。 最终，他给警察发了紧急信号。
That night, Walter sat up until midnight, At last, he signaled urgently to the police.
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