同根派生 crack up相關詞英漢例句用作及物動詞 (vt.)The surface gloss had begun to crack.表麪的光彩已經(jīng)開始衰退了。Many small businesses smashed up during the slump.許多小企業(yè)在經(jīng)濟衰退時破了産。crack up更多例句