Just then Agon called for the stadion to begin.

就在这时，阿贡要求体育场开始。

This is a proper stadium, one " stadion" long -- that's about two football fields.

这是一个合适的体育场，一个“体育场”长——大约有两个足球场那么大。

All the athletes were on the track preparing for the first event of the day, the short footrace known as the stadion.

所有的运动员都在跑道上为当天的第一场比赛做准备，即被称为体育场的短距离赛跑。