COW washing technology is adopting through temporary laid circulatory system and adopting identical clean oil, circulating to wash, to dissolve, reach the purpose of clearing tank.

COW清洗工艺是通过临时敷设的循环系统，采用与待清洗油罐中油品相同的清洁油，循环冲洗、溶解，达到清罐的目的。

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I will say the thing I liked about the cow level was that it wasn't just fluff; there was stuff that you could do there that actually had purpose within the game.

我想说我爱奶牛关的原因是因为它重要，在那里玩家可以得到一些游戏中十分必要的东西。

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