如果你想成为一个专业跑步运动员的话，门槛跑法是几个为数不多的技能中，你必须掌握的。

Running at your threshold is one of the few skills you must learn to be a serious runner.

youdao

如果你想成为一个专业跑步运动员的话，门槛跑法是几个为数不多的技能中，你必须掌握的。

Running at your threshold is one of the few skills you must learn to be a serious runner.

youdao