The people in life sciences feel,

有过体验的人就会感觉到
"Hey, we are represented in this subject."

"嗨我们出现在这道题目里了"
All those creatures, which are very interesting,

所有有趣的生物
in the end, you are told,

到最后都变成了
"There's a horse inside a railway carriage."

"在一节车厢里有一匹马"
You cannot see the horse, but the horse is moving.

你看不到马但是它在运动
You can deduce it because the carriage is moving the other way.

你能推出这个结果因为车厢在朝反方向运动
There's a picture of a horse, a picture of the carriage,

这有一幅马的图片一幅车厢的图片
all glossy stuff. Then it says,

画得很漂亮然后告诉你
"Treat the horse as a point particle."

"把马看做一个质点"
See? That's what we learned in the old days.

明白吗我们以前学的就是这样
But nowadays, it's a horse, but in the end,

但是如今一匹马到最后