double-rail

英 ['dʌblr'eɪl] 美 ['dʌblr'eɪl]

• 单线铁路

double-rail的用法和样例：

例句

1. The design requirements were for three lanes of vehicular traffic and a single rail line in each direction.
   这个设计要求在每个方向有三条交通车道和一条单线铁路线。