并列题名：High speed rail era High speed rail era 并列题名：High-speed rail 并列题名：High-Speed rail 并列题名：High-speed rail in colour 并列题名：China high-speed railway 并列题名：China's high speed railway 并列题名：China's high-speed railways 并列题名：New retail era 并列题名：Silk raod high-speed railway