But it had rows of seats like that, usually made over a hill or dug into the ground in some way.

但是观众席的结构很相似，通常建在山坡上或挖入地下。

耶鲁公开课 - 新约课程节选

The cart could be a little ways up the hill, and in this case, it's enthalpy, but again, there would be lots of accessible states.

在这种状态下，小车会稍稍向山坡上移动，在现在考虑的情况下，自由焓决定一切，但是同样有很多可能的状态。

麻省理工公开课 - 热力学与动力学课程节选

If we have a small engine, and we have to pull the car up a steep hill,a difficult hill, the engine is more likely to collapse,to blow up.

如果我们用的引擎很小，想把车开上一个陡峭崎岖的山坡，引擎很容易损毁，爆炸。

哈佛公开课 - 幸福课课程节选