Sam: There was a sports field.

萨姆：这是一个运动场。

Tom is very active on the sports field.

汤姆在运动场上是很活跃的。

Why? A pond is nicer than a sports field.

为什么？池塘比运动场好得多。

What was here then? There was a sports field.

这里以前是什么？这是一个运动场。

The site was then paved over for the sports field.

然后该遗址就被铺平用作学校运动场。