Now, that is doable for us but that's not affordable in many parts of the world.

如今,这对我们来说不算难事,但是实际上,对于许多地区的人,这是无法负担的

耶鲁公开课 - 生物医学工程探索课程节选

But nowadays, it's a horse, but in the end, if you're going to treat it as a point particle, it seems to me to be a real waste.

但是如今,一匹马,到最后,如果你仅把它当做一个质点来看,对我来说似乎是有点太浪费了

耶鲁公开课 - 基础物理课程节选