摘要
High-speed rails （HSR） are playing an important role in the transportation systems across the world. In Japan, the Shinkansens carry more than 250 million passengers each year. In Europe, the trans-European high-speed rail network is in operation. At the beginning of 2011, U.S. President has called for a six-year, $53 billion budget for HSR. Nowadays, China has built the world＇s largest HSR network of over 4 600 miles.
High-speed rails （HSR） are playing an important role in the transportation systems across the world. In Japan, the Shinkansens carry more than 250 million passengers each year. In Europe, the trans-European high-speed rail network is in operation. At the beginning of 2011, U.S. President has called for a six-year, $53 billion budget for HSR. Nowadays, China has built the world＇s largest HSR network of over 4 600 miles.
