So, he had me go through a longer than normal warm-up period and on that day, I actually hit a PR.

他让我做了比平常更长时间的热身，那天，我真的打破了我的个人记录。

For example, one graphic illustration to which children might readily relate is the estimate that rainforests are being destroyed at a rate equivalent to one thousand football fields every forty minutes - about the duration of a normal classroom period.

例如，孩子们可能容易联想到的一个图解是，估计热带雨林正在以相当于每四十分钟一千个足球场的速度被破坏——大约是正常课堂时间的持续时间。