Which burns up more calories—swimming or cycling?
游泳和骑车,哪种运动消耗热量大?
He hooked up with fellow cycling enthusiasts and joined several clubs.
他结交了其他自行车爱好者们,还参加了几个俱乐部。
If you're running or cycling, for example, build up your endurance for at least a month before you get into anything more intense.
举例来说,如果你是跑步或者骑车,那么就起码用一个月来锻炼耐力,再进行更高强度的练习。
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