They cost nine pounds new, three pounds secondhand.新的9英镑,旧的3英镑。Others donated secondhand clothes.其他人捐赠了一些旧衣服。I bought a secondhand chair which is as good as new.我买了一把二手货椅子,它如同新的一样....
Polish up your writing skills on a one-week professional course.上为期一周的专业课,提高你的写作技能。I'm going to New York, so I must polish up my English.我要去纽约, 因此我必须提高英语水平.You've got to polish up on your idiomatic expressions....