Plants produce oxygen during photosynthesis.
植物在光合作用过程中会产生氧气。
Humans need oxygen to survive and thrive.
人类需要氧气才能生存和发展。
The oxygen level in the room was dangerously low.
房间里的氧气含量危险地低。
Scuba divers carry tanks of oxygen underwater.
潜水员在水下携带氧气瓶。
Firefighters wear masks to breathe oxygen in smoke.
消防员戴上面罩以在烟雾中呼吸氧气。
Astronauts rely on oxygen tanks in space.
宇航员在太空中依赖氧气罐。
High altitudes have less oxygen available.
高海拔地区可用的氧气较少。
Fish extract oxygen from water using gills.
鱼类用鳃从水中提取氧气。
The air we breathe contains about 21% oxygen.
我们呼吸的空气中约含有21%的氧气。
Hospitals provide supplemental oxygen to patients in need.
医院为需要的患者提供补充氧气。
oxygen tank 氧气罐
oxygen supply 氧气供应
oxygen level 氧气水平
oxygen therapy 氧气疗法
oxygen sensor 氧气传感器
oxygen concentration 氧气浓度
