本文讨论了地下水，对油气二次运移与聚集的宏观和微观控制作用及其研究方 法。

The microscopic control refers to the effects of groundwater on migration and accumulation of oil and gas in traps or reservoirs.

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以加拿大一厂址区碳酸盐岩含水层中地下水受到三氯乙烯（TCE）化合物的污染作为实例，对TCE的物理化学特性及其生物降解作用进行论述。

The physicochemical behavior of trichloroethene (TCE) and its biodegradation in a carbonate aquifer are studied, taking a case history as an example.

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