- They also do not have the enzymes needed to protect the body against oxidants such as oxygen radicals.
它们也没有用来保护自身抵抗的像氧基这样的氧化剂的酶。
- Liquid oxygen is used as an oxidant for liquid fuels in the propellant systems of missiles and rockets.
在导弹和火箭的推进系统中氧用作液体燃料的氧化剂。
