If you've never run before, follow this step-by-step plan for building a running base.

如果你之前从来没有跑过，跟着这个计划一步步地打造跑步基础。

youdao

Keep all your runs at an easy, conversational pace for at least 6-8 weeks, until you have a good running base established.

至少在6到8周之内，你要在跑步中保持一种如同谈话般轻松的步调，直到你建立起了一个良好的跑步基础。

youdao

One of the easiest ways to get injured is to increase your mileage too soon, before you've established a good running base.

在你建立起一个很好的身体基础之前，过快的提高英里数很容易使身体受伤。

youdao

Nationals manager Davey Johnson appreciates his young star's base running.

WSJ: Bryce Harper: Clocking the Fastest Home-Run Trots

But there have been a number of questionable calls on base running--when it wasn't immediately clear if a player actually tagged the bag or if a runner was tagged or not.

FORBES: Magazine Article

Robertson said he injured the leg running to cover first base in the eighth inning Wednesday.

WSJ: Robertson out for Yankees series against A's