如果你是一个新手，仅仅关注里程数就够了；如果你是富有经验的老手，可以增加速耐力跑训练。

If you're a beginner, just focus on logging miles. If you're more experienced, add speedwork.

youdao

如果你是一个新手，仅仅关注里程数就够了；如果你是富有经验的老手，可以增加速耐力跑训练。

If you're a beginner, just focus on logging miles. If you're more experienced, add speedwork.

youdao