n.刻薄；严厉；(气候等的)严酷；粗糙
用作名词 (n.) The asperity of the winter had everybody yearning for spring.
严冬之苦让每个人都渴望春天。
If such additives are used then the chemical activity may not be restricted to the asperity contacts.
如果使用了上述添加剂,化学反应可能就不限于表面粗糙的接触。
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