The final step came when steam was introduced into the cylinder to drive the piston backward as well as forward, thereby increasing the speed of the engine and cutting its fuel consumption.

最后一步是将蒸汽引入气缸，使得活塞前后推动，从而提高了发动机的速度，降低了燃料消耗。

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Third, reduce the consumption of steam trap their own steam.

第三，降低蒸汽疏水阀自身的蒸汽消耗量。

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Solve the great energy consumption of boilers due to steam cannot be recycled.

完全解决锅炉之蒸汽不可回收的能耗大问题。

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Some commentators feel that the Chinese investment boom must eventually run out of steam, whether for lack of good projects to finance or because the country will shift to a more consumption-led model.

ECONOMIST: Making sense of the fall in commodity prices