1. 摩托车   motorcycle   spoke   pedal   handbrake   Hint Half-n-half Clue   2. 链子   chain   pedal   tire pressure   scooter   Half-n-half Clue   3. 扣练齿轮   sprocket   tricycle   seat   handlebar   Half-n-half Clue   4. 缓冲器   wheel   cable   motorcycle   shock absorber   Half-n-half Clue   5. 轮幅   horn   spoke   engine   scooter   Half-n-half Clue   6. 轮胎   pump   handbrake   sprocket   tire   Half-n-half Clue   7. 闸   motorcycle   cable   pump   brake   Half-n-half Clue