駛上駛下式roll: vt. 1.滾,轉(zhuǎn),推滾(桶、車(chē)輪等),使(煙、塵土)滾 ...onroll; roll on: 滾滾向前roll onroll off: 滾裝船滾上滾下roll onroll off facilities: 水平裝卸設(shè)施roll onroll off ship: 滾裝船下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯