Sleeping Horses

2 Sleeping Horses When it's time to sleep, you go to bed and lie down. Soon, you fall asleep. But not all animals are like that. Horses, for example, can stand while they sleep. Isn't that strange! How do they do that? It's all in the horse's knees. A horse can lock its knees so it does not fall down. Isn't that amazing? Yes, horses can sleep standing up without falling over!

睡觉的马 当该睡觉的时候，你上床躺下。很快，你就睡着了。 但不是所有的动物都是这样的。例如，马睡觉时可以站立。这不是很奇怪吗?他们是怎么做到的? 全在马的膝盖上。马可以锁住膝盖，这样就不会摔倒。这不是很神奇吗? 是的，马可以站着睡觉而不会摔倒!

I sleep standing up.

我站着睡觉。