They have purposely covered up oil spills, accidents, faulty bookkeeping, and inactive ingredients in pursuit of profit.
他们有目的地掩盖石油泄漏、各种事故、错账和闲置材料以追求利润。
Return oil is equally divided, and uniform crankcase pressure and oil level are purposely kept in equilibration parallel system.
油气平衡式并联技术平均分配回油，并强调气压和油位的平衡。
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