roughness

/ˈɹʌf.nəs/ 名词 C2

中文：粗糙、粗糙度、不平

The property of being rough, coarseness. (countable, uncountable) · The roughness of the road made me wonder if my car would fall apart.
Something that is rough; a rough spot. (countable, uncountable)
Roughage; coarse fodder. (US, countable, uncountable)
A measure of how rough something is, such as a surface (countable) · The surface roughness was low.

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