一个礼拜一天试着在跑步机上用时间区隔来增加你的速度。

Try intervals on the treadmill one day a week to boost your speed.

youdao

一个礼拜一天试着在跑步机上用时间区隔来增加你的速度。

Try intervals on the treadmill one day a week to boost your speed.

youdao