(供人吸氧时用的)氧气面罩( oxygen mask的名词复数 );
The participants also wore face masks that enabled the researchers to measure their oxygen consumption.
志愿者戴着面罩以便科学家测试其耗氧量.
Oxygen masks are used in aircraft only in emergencies.
飞机上的氧气面具只用于紧急情况.
简答网 · 双语新闻
简答网 · 四六级英语
简答网 · 高考英语
简答网 · 双语娱乐资讯
简答网 · 中考英语