还是那个道理，你不用像猴子一样走路……你只要双膝弯曲一点、双脚稍微分开一点走路，就会让你增加一些平稳。

And again, you don't have to walk like a monkey... but if you just simply walk with your knees bent a little bit and your feet a little bit apart, that's going to give you some stability.

youdao

结果就是我们能把所有的结果，整理成一个单一的微分，就像我们前面看到的一样，这说明我们可以利用这个式子，定义一个新的物理量。

So the result is we can combine all of these as a single differential, and just like we've seen before, what that suggests is that we define another new quantity given by this expression.

youdao