柴油机

例句：

1. 1. The diesel engine is a popular choice for heavy-duty vehicles.
   柴油机是重型车辆的热门选择。
2. 2. The diesel engine has a high efficiency and low emissions.
   柴油机效率高且排放低。
3. 3. The diesel engine is more reliable than the gasoline engine.
   柴油机比汽油发动机更可靠。