four speed transmission

例句：

1. 1. The carhas a four-speed transmission that allowsfor easy shifting between different driving conditions.
   这辆车配备了一个四速变速器，可以轻松地在不同的驾驶条件下切换档位。
2. 2. The newmodel offers a more efficient four-speedtransmission compared to its predecessor.
   新款模型相比前代车型拥有更高效的四速变速器。
3. 3.The engineers worked tirelessly to developa four-speed transmission that could handleheavy loads without compromising performance.
   工程师们不懈努力，开发了一种四速变速器，能够在不牺牲性能的情况下处理重载。