And these verbal descriptions lead to some pictures that I put up and I'll put up again about how you might try to accomplish something like run an engine or move heat from a colder to a warmer body.

这些言语的描述有助于你们理解我讲过的,而且还要再讲的一些物理图像,比如一台发动机,是怎么运行的,或热怎样从冷的物体传到热的物体。

麻省理工公开课 - 热力学与动力学课程节选

It can be used to run an internal combustion engine in a car or power one using a fuel cell, with heat and water as the only emissions.

ECONOMIST: Chicken feathers could provide a high-capacity store

Converting an engine to run on hydrogen is relatively simple.

ECONOMIST: Hydrogen-powered cars

It does not make sense economically as ANY alcohol fuel cost more to produce and supply than the gasoline it is replacing especially if you consider the infrastructure improvements necessary to transport and contain the material and the engineering required to design an engine that can run on it.

FORBES: Breakthrough in Biofuels? Maybe.