我国已经成为世界上高速铁路发展最快、系统技术最全、集成能力最强、运营里程最长、运营时速最快、在建规模最大的国家。高铁建设取得的显著成效是改革开放的重大成果,是我国经济实力和铁路科技实力的重要体现,并为我国经济社会又好又快发展提供了重要的支撑和保障。但是,我们既面临难得的历史机遇,也面对诸多可以预见和难以预见的风险挑战。 China has become the world's fastest growing high-speed railway, the most complete system technology, the most integrated capacity, the longest mileage, fastest operating speed, the largest under construction in the country. The notable result achieved by the high-speed railway construction is a major achievement of reform and opening up. It is an important manifestation of China's economic strength and the strength of railway science and technology and provides important support and guarantee for the sound and rapid economic and social development of our country. However, we face both rare historical opportunities and many foreseeable and unpredictable risk challenges.