Lubricant

['luːbrɪk(ə)nt] or ['lubrɪkənt]

解释:

(noun.) a substance capable of reducing friction by making surfaces smooth or slippery.

校对:克劳斯--From WordNet

解释:

(a.) Lubricating.

(n.) That which lubricates; specifically, a substance, as oil, grease, plumbago, etc., used for reducing the friction of the working parts of machinery.

杰西卡校对

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