“运输线”造句

三条运输线为交易会服务.
Three transportation lines will serve the fair.

其外层环带还有沟通树冠和树根的运输线.
The outer zones are the conducting routes between the crown and the roots.

使用铁路运输线的人数在上升,这是个好兆头.
One encouraging portent is that more people are using the railway network.

• #运输线