coal for locomotive

例句：

1. 1. The train needs a lot of coal for its locomotive.
   火车需要很多煤来驱动它的机车。
2. 2. The engineer inspected the coal for locomotive quality.
   工程师检查了机车用的煤的质量。
3. 3. The coal was delivered to the train station in bulk.
   煤炭被大量运送到火车站。