五气是中医学中按照五行属性，从气（气味）方面对事物进行推演归类的一种分类标准，并按照五行理论，来阐释、推演五气（气味）中的复杂联系。中医学中五气所包含的内容和意义有很多，比较主流的是将风、暑、湿、燥、寒称之为五气。
结论HIV/AIDS发热多为内伤在先，六淫外邪乘虚侵袭，或内生五气郁久生热。
Conclusion Due to the former internal injuries, HIV/AIDS fever is caused by six exogenous pathogenic factors invasion or five endogenous of pathogenic factors stagnation.
全球超过四分之一的石油和近五分之一的天然气来自近海，尽管近海钻探的成本是陆地钻探的六到七倍。
More than one-quarter of the world's oil and almost one-fifth of the world's natural gas come from offshore, even though offshore drilling is six to seven times more expensive than drilling on land.
上周五天气晴朗。
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