roughen

roughenroughenD.J.:[ˈrʌfən]K.K.:[ˈrʌfən]v.1.■(使)变粗糙

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roughen['rʌfən]vt.1.■使粗糙；使不平滑：Her hands were roughened by housework.她的手由于家务劳动而变得粗糙。You'd better roughen the surface before applying the paint.你最好先把表面弄毛糙再涂颜料。vi.1.■变粗糙；变得不平：As time went on,the surface of the highway roughened.随着时间的推移，公路的路面变得崎岖不平了。

roughenroughen[ˈrʌfən]vt.1.■弄粗糙, 使崎岖不平Her hands were roughened by work.她的手由于干活而粗糙。

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词性变化roughen[ˈrʌfən]vi.1.■变粗糙, 变得崎岖不平The surface roughens.表面变粗糙了。

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继承用法roughenedadj.1.■毛面的, 表面粗糙的