The other one is still a lying position. Then pretend you are riding a bike for 4 or 5 minutes.
另外一个运动也是平躺着，抬起脚做骑自行车动作4到5分钟。
Good morning, you are riding a new bike.
早上好啊，你骑了一辆新自行车。
As I mentioned in the bike riding example, there are a lot of subtle things you would miss if you simply read about riding a bike.
正如我在骑自行车的例子中提到的，如果你只是简单地读关于骑自行车方面的书，一此微妙技巧方面的知识是体会不到的。
In stating the obvious, by leaving the car behind and simply walking or riding a bike you are doing both yourself and the environment good.
很快你就会清楚地看到，不用汽车而是仅仅步行或骑自行车，对你自己和环境都有好处。
While (you are) riding on a bike, you should be careful.
当你骑自行车时，一定要小心。
It also entails a really unique bike riding experience. The question now is, are you brave enough to bike on wires?
这肯定会是非常独特的自行车骑行体验。但问题是，你够胆量在钢索上骑车吗？
When you are in a bike race, you don't ride in the same way as when you are just riding for fun.
当你参加自行车比赛的时候，你不会用骑车娱乐那样的方式骑自行车。
By riding a bike your life will change immensely, as you can see from the 11 points that I wrote above, and there are many more.
正如你可以从以上我写的11点中看到，骑自行车将极大地改变你的生活，而且它还有更多的优点。
You may never forget how, but how proficient are you when you first return to bike riding after a number of years of inactivity?
你也许从来不会忘掉如何骑，但是当你很多年没有骑的时候，重新去骑的时候就没有多少熟练了。
你是在骑自行车吗？
你是在骑自行车吗？
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