Since long ago effective source rocks have been defined as rocks that have generated and discharged hydrocarbon and the discharged hydrocarbon can form commercial hydrocarbon reservoirs.

长期以来有效烃源岩的定义为已经生成和排出烃类，且所排出的烃类足以形成商业性油气藏的岩石。

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The other 65 percent is lost forever in the form of waste heat discharged into the environment.

FORBES: Recycling Wasted Heat and Power Could Clear the Air

Unfortunately, two-thirds of the sex offenders discharged from prison are still not getting any form of treatment.

ECONOMIST: Are there better ways of dealing with sex offenders?