main-line

• n. 干线；正线；主线

英英释义

名词 main line:

1. the principal route of a transportation system

动词 mainline:

1. inject into the vein

例句

用作名词 (n.)

1. We have been wired into the main system now.
   我们现在已经与输电干线接通了。
2. The railway line comes to the airport.
   铁道干线直达飞机场。
3. The Relay Agent could not start up its main thread.
   中继代理无法启动其主线程。
4. Overlaps are often provided on main line railways too.
   交叠经常被提供在主线铁路也是。