柯林斯詞典roughen /?r?f?n/ (roughening,roughened,roughens) 1. V-T If something has been roughened, its surface has become less smooth. 使···變粗糙[usu passive] ...complexions that have been roughened by long periods in the hot sun. ...經(jīng)長(zhǎng)時(shí)間日曬變粗糙了的麪容。 返回 roughen劍橋詞典to (cause something to) become less smooth (使)變粗糙;(使)變不平 返回 roughen