甚至最好的蒸汽机车也很慢。

Even the best steam locomotives were slow.

19世纪是蒸汽机车鼎盛的时代。

The 19th century was the heyday of steam railways.

我儿子对蒸汽机车着了迷。

My son is crazy about steam-engines.

1941年，火车可能已由蒸汽机车来牵引了。

In 1941, the train would have been pulled by a steam engine.

一辆老式蒸汽机车喷着浓烟，拖着一节又一节的煤车缓慢地向东北方向开去。

An old steam engine went slowly by, heading northeast, puffing great clouds of smoke and hauling a train of coal trucks.