| 单词 | main track |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔siding〕A short section of railroad track connected by switches with a main track.侧线，岔线：由转辙器同主轨相连的一短段铁路路轨美国传统〔spur track〕A short side track that connects with the main track of a railroad system.支线，岔线：连接铁路系统主要轨道的短的边线美国传统 |
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