为了最有效的发挥跑步的作用，摆臂时手臂尽量靠近身体，身体不要前倾，抬脚不要过高。
To get the most out of each stride, swing your arms close to your body, don't lean forward, and keep your feet low to the ground.
为了最有效的发挥跑步的作用，摆臂时手臂尽量靠近身体，身体不要前倾，抬脚不要过高。
To get the most out of each stride, swing your arms close to your body, don't lean forward, and keep your feet low to the ground.
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