1. 自行车   car   truck, lorry   boat   bicycle   Hint Half-n-half Clue   2. 卡车，卡车   truck, lorry   bus   limousine   train   Half-n-half Clue   3. 火车   train   truck, lorry   car   bicycle   Half-n-half Clue   4. 出租汽车，小室   boat   ferry   car   taxi, cab   Half-n-half Clue   5. 搬运车   airplane   limousine   boat   van   Half-n-half Clue   6. 摩托车，摩托车   car   helicopter   taxi, cab   motorbike, motorcycle   Half-n-half Clue   7. 轮渡   helicopter   ship   ferry   bus   Half-n-half Clue