The large steam-breathingmachines that once used this road no longer needed it.
那个巨大使用蒸汽推动的机器，曾经使用这条路但是现在不再需要它了。
2
Be assured that efficient non-polluting machines will replace them, and with the cleansing of your atmosphere you will soon be breathing clean air.
请放心，高效无污染的机器将会取代的，并且我们还要清洁你们的空气，很快你们会呼吸到非常清新的空气。
3
May be used in machines compressing air for breathing purposes (such as air bottles for divers) provided all compressor units include subsidiary air clean-up apparatus.