更新这份名单，并对紧急呼叫系统进行测试一下，确保系统使用正常。
Update your list and conduct a test of your emergency calling system to make sure it works.
通过同样的GPS跟踪系统和紧急呼叫按钮，我们的专业的紧急救援车辆将立刻赶到现场，世界顶级的探险医疗队伍将立刻采取行动。
With the same GPS tracking system and emergency call buttons the riders can alert our expert emergency medical truck with world class expedition medics, who will spring into action.
这个雷达系统，被称为合成孔径雷达或简称SAR，是用来弥补全球卫星定位系统的。卫星系统监听失事飞机或者被困人员所发出的紧急呼叫信号。
The radar, called synthetic aperture radar or SAR, is meant to complement a global satellite system that listens for electronic emergency beacons sent by wrecked planes or people in distress.
这个雷达系统，被称为合成孔径雷达或简称SAR，是用来弥补全球卫星定位系统的。卫星系统监听失事飞机或者被困人员所发出的紧急呼叫信号。
The radar, called synthetic aperture radar or SAR, is meant to complement a global satellite system that listens for electronic emergency beacons sent by wrecked planes or people in distress.
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