- 政府特设机构制订国内航线和从一国飞往他国的国际航线. - Special government agencies regulate domestic airlines and those that fly into a country from other countries. 
- 去芝加哥的交通十分方便,大多数国内航线和许多国际航线都直达芝加哥。 - Chicago is an easy city to get to, served by most domestic airlines and many direct flights by international airlines. 
- 国内航线在一年内损失了五分之一的客源. - Domestic airlines have lost a fifth of their passengers in the space of a year. 
- 这家航空公司主要经营国内航线。 - This airline mainly operates domestic routes. 
- 汕头机场开通国际国内航线四十四条. - Shantou airport has opened 44 international and domestic air routes. 
- 东京国际机场(羽田机场)距离东京市中心比较近,主要负责国内航线和少量的国际航线。 - Tokyo International Airport (Haneda Airport) Tokyo distance relatively near, is mainly responsible for domestic flights and a small number of international routes. 
- 一些无法乘坐国内航线的乘客转而选择火车,而火车公司也在从东海岸到西海岸的路线上增加了更多的车次。 - Some passengers unable to fly on domestic routes switched to rail, with train companies putting on more services on the East Coast and West Coast main line routes. 
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国内航线 internal air route 

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