Low carbon: means saving and protecting the environment! Emission reduction: that is, saving energy and reducing exhaust emissions. New energy: the new development of new energy! Light rail: We usually see passenger trains, whose power devices are installed on the traction locomotive, and many buses without power devices are hung behind the traction locomotive. High-speed rail: High-speed rail generally refers to railway transportation with a running speed of more than 200 kilometers per hour, and most of them refer to passenger group purchase: team shopping! Slimming: lose weight! Self-help tour: Travel with a bag in the most economical way. Design your own route and arrange all the blogs on the trip: translate them into weblog, blog or blog, etc. , which is usually managed by individuals, publishes new articles from time to time. Follow-up: Write down your opinions behind the posted posts. This is called follow-up and reply. E-books: not books, but electronic reading! Magnetic levitation: use the attraction of magnets to float! Ask for adoption! You and I get extra points!