You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.

我们用力很大,于是压缩得很快,打气筒内外热传递的速度,与之相比要慢得多。

麻省理工公开课 - 热力学与动力学课程节选

You couldn't just run something successfully in a cycle and get work out of it, using the heat from the hot reservoir, without also converting some of the heat that came in to heat that would flow into a cold reservoir.

如果一样东西在循环工作过程中,只有热从高温热源中流出，而没有热流入低温热源，那么此过程,不可能对外做功,不可能把所有热。

麻省理工公开课 - 热力学与动力学课程节选