According to China's state railway, its recently designed high-speed train model is capable of traveling at a speed of 400 kilometers per hour.
据中国国家铁路称，其最近设计的高速列车模型能够以每小时400公里的速度行驶。

The CR450 is said to be significantly faster, lighter and more energy-saving than the CR400 Fuxing train currently in wide use.
据称，CR450比目前广泛使用的CR400复兴号列车更快、更轻、更节能。

China has the world's largest high-speed railway network, extending 45,000 kilometers in length across the country. 
中国拥有世界上最大的高速铁路网，全长45000公里。