Skin thickens, dries and coarsens after sun exposure.晒后皮肤会变厚、变干、变粗糙。

Her voice has deepened and coarsened with the years.随着岁月的流逝, 她的声音变得低沉粗鲁起来。

his gnarled, coarsened features他那饱经风霜、粗糙的容貌

He had coarsened his voice to an approximation of Cockney.他让自己的口音变得粗俗起来, 接近伦敦东区土话的发音。