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单词 locator beacon
例句
原声例句
CNN 10 学生英语综合听力 2016年5月合集

Both black box components are outfitted with underwater locator beacons, which self-activate the moment they come into contact with water.

两个黑匣子组件都配备了水下定位器信标,它们在与水接触时会自动激活。

剑桥雅思听力全真试题 13

We do have an emergency locator beacon in the hut but only use that if it's a real emergency, like if someone's ill or injured.

我们的确会在小屋里有一个紧急定位灯塔,但是只会在真正紧急的情况下使用,就好比有人生病或者受伤了。

CNN 精选 2015年3月合集

A report released yesterday said the plane's locator beacon had an expired battery, that it needed to be replaced more than a year before the plane vanished.

昨日发布的一份报告显示这架飞机的定位信标的电池电量已经耗尽, 它需要在一年多前飞机消失前就进行更换。

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