1. 船   train   ship   taxi, cab   ferry   Hint Half-n-half Clue   2. 小船   ship   taxi, cab   boat   motorbike, motorcycle   Half-n-half Clue   3. 直升机   helicopter   van   airplane   bicycle   Half-n-half Clue   4. 出租汽车，小室   ship   train   taxi, cab   helicopter   Half-n-half Clue   5. 自行车   truck, lorry   bicycle   motorbike, motorcycle   helicopter   Half-n-half Clue   6. 大型高级轿车   bicycle   motorbike, motorcycle   limousine   truck, lorry   Half-n-half Clue   7. 公共汽车   bus   van   bicycle   ship   Half-n-half Clue