adj.毛面的；表面粗糙的
动词roughen的过去式和过去分词形式.
Roughen the surface before applying the paint. 先把表面弄毛糙再涂颜料。
Before painting the wood, roughen the surface with sandpaper. 油漆木器前，先用砂低把表面磨毛糙。
Her hands were roughened by work. 她的手由于干活而粗糙。
Her hands were roughened by housework. 她的手由于家务劳动而变得粗糙。
