Always begin with 10 to 15 minutes of easy running before picking up the pace.

通常进行10至15分钟的小跑之后再加速。

youdao

Start with 10 to 30 minutes of easy running, then pick up the pace to around your marathon pace.

开始时，轻松跑10 - 30分钟，然后，提速至您的马拉松配速附近。

youdao

As a new runner you are much better off focusing on easy running. That should be the core of your training.

作为跑步新人，您最好专注于轻松跑，并以它作为您的训练核心。

youdao

In Baghdad, it's not always easy running down people you need to find.

NPR: The Joy and Sorrow of Becoming a Baghdad Parent

It's not easy running a hedge fund these days, especially given the new fervor for oversight in Washington.

FORBES: Magazine Article

That can't be easy running behind that.

BBC: World Championships day seven as it happened