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。
2
The first step in cutting costs is finding the right glass and production process for the job.
削减开支的第一步是找到正确的玻璃和生产过程。
3
People who have stopped cutting often say the first step is the hardest - admitting to or talking about cutting.