It seems on the physical layer of oil, shiny.

它的身体好象上了一层油，亮亮的。

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A porous sand layer or sand body filled with oil.

充填了油的多孔砂层或砂体。

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The temperature on the top layer of the oil tank is the lowest.

储油罐中顶层原油的温度最低。

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The temperature on the top layer of the oil tank is the lowest.

储油罐中顶层原油的温度最低。

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