我是运动新手，当我去买跑鞋的时候，本地的跑鞋店主告诉我说，在训练中使用两到三种不同的鞋款对你的脚更好。

I'm new to the sport, and when I went to buy my running shoes, the local running-store owner explained that training in two or three different shoe models is better for your feet.

youdao

负责全国运动会和城市运动会的竞赛组织工作，指导全国性训练基地的建设和使用；

to be responsible for organizing the National Games and the City Games;to supervise the constriction and use of national training bases;

youdao