2 sentences for 专线 (zhuān​xiàn)

1. 市长专线二十四小时为市民服务。

   shì​zhǎng zhuān​xiàn èr​shí​sì xiǎo​shí wèi shì​mín fú​wù.

   The mayor's hotline serves the citizens 24 hours a day.

   Source: Dong Chinese Dictionary

2. 这条高铁专线连接了两个主要的工业城市。

   zhè tiáo gāo​tiě zhuān​xiàn lián​jiē le liǎng gè zhǔ​yào de gōng​yè chéng​shì.

   This dedicated high-speed rail line connects two major industrial cities.

   Source: Dong Chinese Dictionary