oxygen
The brain requires a constant supply of oxygen.
大脑需要持续供氧。
—— 柯林斯例句a bubble of oxygen
氧气泡
—— 给力词典精选rising rates of MRSA infections in hospitals
医院中抗甲氧西林金黄色葡萄球菌感染病例不断增长的发生率
—— 给力词典精选Oxygen has high reactivity.
氧的反应性很高。
—— 给力词典精选Oxygen is one of the basic elements of substance.
氧是物质的基本元素之一。
—— 给力词典精选