音標發(fā)音英式音標 [?r??l??n ?r??l??f]美式音標 [?ro?l?ɑ?n ?ro?l?ɑ?f]英式發(fā)音 美式發(fā)音 基本解釋（船）滾裝滾卸的，汽車可直接上下的。同根派生 roll-on roll-off相關(guān)詞英漢例句adjective [ before noun ]a roll-on roll-off ferry 汽車輪渡roll-on roll-off更多例句英英字典劍橋英英字典 A roll-on-roll-off ship is built so that vehicles can drive on at one end and off at the other.roll-on roll-off劍橋字典roll-on roll-off柯林斯字典