如果是这样，不要害怕；我们所有人有些时候都是那样子。

If so, fear not; we are all that person at some point.

youdao

如果是在一个习惯左手系的星球上，那样我们的习惯会完全相反，就是这样了。

If we had been on the planet with left-handed coordinate systems then actually our conventions would be all the other way around, but they are this way.

youdao

如果是那样的话，我今天就不应该做饭了，因为昨天我已经做了，这样就公平了。

In that case, I shouldn't have prepared the food today, because I did it yesterday. That's fair.

youdao

It turns out everything around us moves energy around in one way or the other If you're a biological system, you're burning calories, burning ATP.

我们周围的一切物质,都以这样那样的方式传递着能量,如果你是一个生物系统，你会燃烧卡路里，燃烧。

麻省理工公开课 - 热力学与动力学课程节选