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
In the second step, the T4 engine compiles the transformation class into an assembly and executes the code, generating an output text file.
第二个步骤是T4的引擎编译转换类为一个程序集并执行该代码，以产生了输出文本文件。
3
In the first step, the T4 engine USES the text template to generate a temporary transformation class.