compound locomotive

例句：

1. 1.The new compound locomotive has been tested on the main line.
   新型复合型机车已在主要线路上测试。
2. 2. The engineers are busy designing a new compound locomotive for the railway company.
   工程师们忙于为铁路公司设计一种新型复合型机车。
3. 3. The compound locomotive is capable of carrying heavy loads and traveling long distances.
   这种复合型机车能够承载重载并长途行驶。