两种黑匣子都配备了水下定位信标，当它们和水接触以后会自动启动。
Both black box components are outfitted with underwater locator beacons, which self-activated the moment they come into contact with water.
两种黑匣子都配备了水下定位信标，当它们和水接触以后会自动启动。
Both black box components are outfitted with underwater locator beacons, which self-activated the moment they come into contact with water.
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