·2,447,543篇论文数据，部分数据来源于NoteExpress
同义词： trainmaster train dispatcher
以上来源于: WordNet
The yardmaster assumed he was saving the company money by not using a crew and fuel to run a light train.
FORBES: Magazine Article
If a yardmaster was faced with a so-called light train, one with just 60 cars, he might let it sit in the yard for another day until another 60 cars bound for the same location came in.
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