Uphill running forces you to drive your arms harder than you do when running on flat ground, so you'll improve your upper body strength.
使您的上身有劲：跑坡道迫使您摆臂比跑平地时更加用力，因此，您的上身力量可以提高。
He had been running uphill a long way.
他向上坡跑了很长的一段路。
I never ran uphill in 2008, so I decided that I shouldn't practice running uphill in my training.
在2008年，我从没有在上山时跑过，所以我觉得没有必要训练向山上跑。
I never ran uphill in 2008, so I decided that I shouldn't practice running uphill in my training.
在2008年，我从没有在上山时跑过，所以我觉得没有必要训练向山上跑。
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