He's earned a little money on the road and sent it home.

他在路上赚了点钱寄回家。

耶鲁公开课 - 1945年后的美国小说课程节选

You might think, given all this, and given the ultimate plot of On the Road, that being on the road is about pursuing that kind of desire, and that it is necessitated by leaving home: you have to leave home in order to pursue that desire.

你们可能觉得，所有这些，以及《在路上》的最终情节，关于在路上就是追寻这种渴望，这就使离家成为必需：,你必须得离开家才能追求那渴望。

耶鲁公开课 - 1945年后的美国小说课程节选