If bricks or wooden walls are treated but unpainted they look beautiful.墙面经过打磨(刮大白)但不喷色漆看起来会很漂亮.RUST unpainted metal tools were covered with rust.未上漆的金属工具布满了锈.Unpainted wooden furniture weathers to a grey colour...没有上漆的木...
to take a throat swab用棉签从咽部采集化验样品Administer the salve to the sunburned area with a cotton swab.请用棉药签把药膏敷在晒伤的地方.She used cotton wool to swab her wounds when they bled.伤口渗出来的血水需要棉花来抹掉....