润滑潤滑

rùn huá

Meaning

smooth; oily; sleek; to lubricate

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Characters

润rùnfresh, moist; soft, sleek氵闰滑huáto slip, to slide; slippery, polished氵骨

Examples

润滑系统设计得不好。

Rùn huá xì tǒng shè jì dé bù hǎo.

The lubrication system was poorly designed.