That was the case when steam ships replaced clippers in the mid-19th century, and when petrol-engined taxis took over from horse-drawn cabs in the early 20th century.
这是19世纪中叶蒸汽动力船舶代替小艇以及20世纪初燃油引擎出租车取代马车的速度。
2
The railway would like to convert another of its locomotives to steam from oil but is reluctant to do so in case it becomes impossible to get the coal.