英语词汇portable extinguisher简单造句、意思、用法及例句-英语例句辞典

单词	portable extinguisher
例句	原声例句 ICAO民航英语 844. The cabin crew have used up all the portable extinguishers. 844. 机组人员已用完所有便携式灭火器。航海英语听力 Chief officer: sure , portable extinguishers have been ready on the spot, have emergency shutdown been tested and signaling has been agreed on? 当然，现场用的便携式灭火器已经备好，应急关断是否测试，关断信号是否已经商量完毕？
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