bicyclen.自行车vi.骑自行车
bicycle pedalling两腿交替蹬水动作
bicycle hub brake自行车车轮闸
bicycle chain lock自行车链条锁
bicycle hand brake自行车手闸
bicycle inner tube自行车内胎
bicycle handle bar自行车车把
bicycle travelling自行车交通
bicycle ergtometry自行车功量计, 自行车测力计
BICYCLE AND ENERGY自行车与能源
bicycle steel ball自行车钢珠