asperity [æˈsperəti]

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n.粗鲁，艰苦

the quality of being severe in the way that you speak and behave

He spoke to the boy with asperity. 他严厉地对那男孩讲话。
The asperity of the winter had everybody yearning for spring. 严冬之苦让每个人都渴望春天。