n. 骑自行车
thermal cycling热循环；循环变温加热
nutrient cycling营养物循环
1.Cycling along the motorway is not allowed.
在快车道上骑车不行。
2.She was hot and breathless from the exertion of cycling uphill.
她骑车上山累得全身发热，喘不过气来。
3.Cycling in France is very different from cycling in the UK.
在法国骑车和在英国有很大的不同。
4.Which burns up more calories—swimming or cycling?
游泳和骑车，哪种运动消耗热量大？
5.Cycling is Europe's second most popular sport.
骑自行车是欧洲第二流行的体育运动。
6.I prefer cycling to school.
我比较喜欢骑车去学校。
7.Cycling in the fast traffic lane is really dangerous.
在快车道上骑自行车， 可真悬。