It seems like the second part is really where the river is hitting the road.

第二部分似乎正是,真正矛盾所在的地方。

普林斯顿公开课 - 人性课程节选

Remember, this is a time, as we'll see in a while, where the czar was on the road a lot, and distances in the Russian empire are enormous.

要记得一点,我们后面还会讲到,因为彼得大帝经常外出,而当时的俄帝国幅员辽阔

耶鲁公开课 - 欧洲文明课程节选

And this is where the rubber hits the road.

这是论战真正开始的地方。

耶鲁公开课 - 政治哲学导论课程节选