| 单词 | railroad system |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔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〔unify〕The creation of the national railroad system unified the country.全国铁路系统的建立使这个国家连为一体。韦氏高阶The national railroad system has nearly all been electrified. 全国铁路系统基本上全部电气化了。译典通 |
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