骑自行车的英文：
astride a bicycle
by bicycle
cycle
ride on a bicycle
ride on a cycle

参考例句：

No cycling
不许骑自行车

Difficult terrain for cycling
骑自行车难以行走的地带

Play with a ball,toy,bicycle
玩球、玩玩具、骑自行车玩

He can't maintain enough equilibrium to ride a bike.
他骑自行车不能保持平衡。

You'll never learn to ride a bicycle if you don't practise.
假如你不练习的话，就永远学不会骑自行车。

Ride your bike or carpool whenever possible : In many of the cities in the US it is hard to get by without a car.
尽可能骑自行车或合伙使用汽车： 在美国的许多城市，出门没车是很困难的。

Almost half of those who die in road traffic crashes are pedestrians, cyclists or users of motorized two-wheelers.
在道路交通事故死亡者中，近一半是行人、骑自行车或开两轮机动车的人。

bicyclists often ride as though two-wheeled vehicles are exempt from all traffic laws
骑自行车者无拘无束，仿佛两轮车就可以不遵守交通规则似的。

He eyed the horseshoe poster over the gate of college park: cyclist doubled up like a cod in a pot.
他望了望贴在学院运动场大门上的那张马蹄形海报:骑自行车的恰似锅里的鳕鱼那样蜷缩着身子。

They like riding bicycles.
他们爱骑自行车。

astride是什么意思：
a.
ad.
prep. 横跨,跨骑,跨越

The bridge stands majestic astride the river.
大桥巍然横跨在江上。

Sitting astride a horse,a gate,sb's knee
骑在马上,大门上,某人的膝上.

So it will be with China and its impending hegemony: English is astride the globe to stay.
因此，英语将伴随中国及其未来霸权存在：英语将跨骑于地球继续主宰世界语言。

When d'Urberville got back to the tent he sat down astride on a chair reflecting, with a pleased gleam in his face.
德贝维尔回到帐篷以后，就叉开双腿坐在椅子上沉思起来，脸上闪现出得意的神气。

One instant he was astride a broncho and flying through the fairy-colored Painted Desert country
他一时骑着野牛在色彩绚丽、宛如仙境的彩绘沙漠上飞驰

bicycle是什么意思：
n. 自行车，脚踏车，单车
v. 骑自行车

The bicycle doctor is doctoring my bicycle.
自行车修理工正给我修自行车。

The bicycles are kept under a shed.
自行车存放在车棚下面。

bicycle luggage carrier
自行车行李架

They like riding bicycles.
他们爱骑自行车。

I have a light bicycle.
我有量轻便的自行车。