What that means is we want to run the hot reservoir as hot as possible and the cold reservoir as cold as possible.

也就是说我们希望高温热源温度尽可能高,同时低温热源温度尽可能低,从原理上说。

麻省理工公开课 - 热力学与动力学课程节选

and when we run in Boston, we have to train in the really, really cold weather.

在波士顿的时候，我们在冒着严寒训练。

在马拉松认识的朋友 - SpeakingMax英语口语达人