The total mileage of China's high speed rail is expected to reach 30,000 kilometers by 2020, covering more than 80% of major cities, according to a development plan for railway construction released by the National Development and Reform Commission.
根据国家发改委近日发布的一项铁路建设发展规划，到2020年，我国高铁总里程预计将达3万公里，覆盖80%以上的大城市。

China will have 150,000 kilometers of rail tracks in operation in 2020, 60% of which are double-track railways and 70% electrified lines, according to the plan.
规划提出，2020年全国铁路营业里程将达到15万公里，复线率和电气化率分别达到60%和70%。

In addition, a 2,000-kilometers network of intercity railway will be formed in economically developed and densely populated areas.
此外，经济发达地区和人口稠密地区将形成规模达2000公里的城际铁路网络。

A total of 3,000 kilometers of branch lines will be expanded, offering a "seamless" transfer experience.
我国将建设总规模3000公里的支线铁路，实现“无缝化”换乘体验。

The plan says that high speed trains will carry 65% of the total passengers by 2020, and the travel time between adjacent major cities will be shortened to 1-4 hours.
规划称，到2020年，动车组列车将承担旅客总运量的65%，相邻大城市间的铁路旅行时间将缩短至1-4小时。

According to requirements, 80% of the train tickets should be available on online platforms.
此外，根据要求，80%的火车票可以在在线平台上买到。