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汉语拼音：gàn xiàn

指交通线、电线、输送管道（水管、输油管之类）等的主要线路。与“支线”相对。

1. 交通线、电线、输送管等的主要线路。与“支綫”相对。

   毛泽东 《建立巩固的东北根据地》：“建立这种根据地的地区，现在应当确定不是在国民党已占或将占的大城市和交通干线，这是在现时条件下所作不到的。”

• Absence of the tone tells the operator that there is at least one idle trunk in a group.

  没有此种音则提示接线员组群中至少有一个空闲的干线。

• I was trying to make up for the time lost in the morning when the cross-country vehicles got stuck in the mud caused by the heavy rains.

  我想尽量弥补早上失去的时间：由于暴雨连连，横跨该国的列车干线被卡在了泥泞中。

• Home Tandem is a tandem of a higher office class to which another tandem of an end office has a final trunk group.

  家庭串联组是一个更高级别串联组，另外一个终端串联组由一个连接该串联组的终端干线群。

• The availability of a variety of food is often aided by the fact that Singapore's port lies along strategic routes.

  因为新加坡港口位于主要干线上，这也促成了这里食物的多样性。

• Contrast the country's already-blemished HSR safety record with that of Japan, without a single fatality or injury after 47 years.

  中国已经沾上污点的高铁安全记录与日本形成反差，日本新干线运行47年来从未发生过一起导致死伤的事故。

• He said the railways would focus on transporting coal and restoring the capacity of trunk lines over the next 10 days.

  他说：今后10天，铁路的重点工作将是保证煤炭运输和恢复干线运力。

• This project by the total skeleton line, south the skeleton line, joins Duan Hebei the skeleton line to be composed, altogether two issues.

  该工程由总干线、南干线、联接段和北干线组成，共两期。

• Much of it has gone on improvements to the state capital's metro and its main arterial roads.

  大部分经费用于改善该州首府圣保罗市的地铁工程及主要干线公路。

• Due to the exposing nature of the terrain, air power is critical in controlling this major artery.

  因为地形显露的特性，空中力量在控制这条主要干线方面是至关重要的。