A：Come on, you are left behind!加油啊，你落后了!

B：Wow, I can't catch my breath. You are running too fast, honey.哇哦，我快喘不过气了。 你跑得太快了，亲爱的。

A：You just need more exercise.你得多运动了。

B：Yes, but you need to slow down. This is jogging, not racing!是啊，但是你也得跑慢点 啊。这是慢跑，不是赛跑!

A：I don't care. I want to burn up my fat.我不管，我要减掉我的脂肪。

B：But running so fast is not good for people over forties.但跑这么快不适合过40的 人啊!

A：Why?为什么?

B：We are not as athletic as we were when young. Mild exercise is more suitable for us.我们没有像年轻时候那样 有活力了。中等强度的运动更适合我们。

A：But I want to burn up more calories!但我想燃烧掉更多的卡路里!

B：In fact, in order to burn up your fat, you must take it slowly for a longer time.事实上，要减肥，你就得 慢慢地跑很长一段时间。

A：Really? I will slow down then.真的吗?那我就慢点跑。