骑脚踏车

骑单车

骑自行车

racing bicycles───赛车；竞赛用自行车

racing bicycle───赛车；竞赛用自行车

riding breeches───马裤

billing cycles───计费周期

riding stables───马厩

striking circles───引人注目的圆圈

recumbent bicycles───卧式自行车

Stirling cycles───史特灵循环

billing cycle───开帐单周期；票据处理周期

They like riding bicycles.───他们爱骑自行车。

Not only can riding bicycles help build up our body, but it is also very environmentally friendly.───骑自行车不仅可以帮助我们强身健体，而且它非常环保。

Riding bicycles can ease traffic jams, thus saving time not only for ourselves but also for others.───骑自行车可以缓解交通堵塞，这样不仅为我们自己也为别人节省了时间。

Riding bicycles, Mr. Sato brought his six-year-old son, Haruto, to see the devastation.───Sato与记者谈话时正骑自行车带他六岁的儿子Haruto去看地震和海啸造成的破坏。

riding bicycles or walking along the street , road accidents can be greatly reduced .───因此，如果人人遵守交通规则，开车、骑自行车或走路小心些，交通事故就可以大大减少。

My silly Peas, so riding bicycles, carrying me around the streets in Shanghai.───我的傻豆豆，就这样骑着单车，载着我，在上海的大街小巷转悠。

Car is also a very suitable transportation tool for travel. Furthermore, driving car is much safer than riding bicycles.───有了小汽车，能自由来去，不用花很多时间，小汽车对于旅行比较舒适，开小汽车比骑自行车安全。

Careful comparison of the two forms of transport will show riding bicycles is more convenient.───如果我们比较一下这两种交通工具，就会发现骑自行车更方便。

The citizens are prohibited from riding bicycles on the sidewalk.───禁止居民们在人行道上骑自行车。