Even if people are in deep coma, people still breathe. This design helps people to send "help me" or "mayday" call continiously by breathing of hunan body.

即使人在昏迷状况下，呼吸活动也仍然在进行，这款呼救器的设计就是利用人的呼吸可以不间断地发出求救信号。

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Terry lay deep in a 16)coma.

特里处于深度昏迷状态。

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Nearly eight hours after surgery, he remained in a deep coma.

已经术后八小时了，他依然处在深度昏迷中。

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Chirac, who is one of the most enthusiastic champions of this breathing space, did not explain what France is going to do to save a constitution which is in a deep coma...

BBC: NEWS | Europe | EU's 'Waterloo' summit angers press

It was flown from a French military air base after Arafat, 75, died Thursday in a Paris hospital after falling into a deep coma that followed a brain hemorrhage.

CNN: Leaders?pay tribute?to?Arafat