但直到19世纪80年代,蒸汽船才将帆布去掉,因为早期的船用引擎经常发生故障。
But steamships didn't lose their sails until the 1880s, because early marine engines had a nasty habit of breaking down.
蒸汽动力和铁的结合使运输发生了革命性的变化,更加产生了更深远的影响。
Steam power and iron combined to revolutionize transport, which in turn had further implications.
这是随着蒸汽机的发展进步而发生的。
This was to occur with progress in the development of the steam engine.
应用推荐