理查兹无视医生的建议，在上周六的比赛中提前使用氧气帐篷从肌腱伤势中恢复。
Richards had defied doctors by using an oxygen tent to recover from his hamstring injury ahead of schedule to play in the showpiece last Saturday.
严禁使用氧气注入制冷系统试压！
Prohibited the use of oxygen injected into the cooling system pressure test!
臭氧疗法使用氧气产生臭氧纯净，医用级。
Ozone therapies use ozone generated from pure, medical-grade oxygen.
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