Germany has launched the world's first hydrogen powered trains in an effort to reduce its dependence on fossil fuels.

德国推出全球首批氢动力列车，以减少该国对化石燃料的依赖。

Takes up the same space as a regular wheel but has got everything in it, the entire power train, the battery, the motor, the computer.

占用与普通车轮相同的空间，但是它包含了所有的东西，整个动力系统，蓄电池，发动机，计算机。

There, he learned to fix steam engines, which used heated water called " steam" and were quite popular in powering trains at this time.

在那里，他学会了修理蒸汽机，蒸汽机使用被称为“蒸汽” 的热水，在当时为火车提供动力时非常流行。

You're talking about 20% of the power train workers in the big three stand to lose their jobs down the road if we go from ICE engines to battery power.

你说的是，如果我们从内燃机转向电池动力，三巨头中20%的动力系统工人将会失去工作。

The Northeast Corridor uses not one but three  different, totally incompatible electrical systems to power its trains—there's one covering Boston  to New Haven, one covering New Haven to New York, and one covering New York to DC.

Northeast Corridor 使用不是一个，而是三个不同的、完全不兼容的电气系统为其火车供电——一个覆盖波士顿到纽黑文，一个覆盖纽黑文到纽约，另一个覆盖纽约到华盛顿特区。