Like railway advocates in the USA, the ministry touts rail as a greener, more energy-efficient form of transportation than driving or flying.

和美国的铁路拥护者一样，中国铁道部也认为，与汽车或飞机相比，铁路是一种更环保、更节能的运输方式。

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The transportation of people, goods and energy sources became more efficient and easier, and the world grew more tightly connected.

人员、货物和能源的运输效率越来越高，也越来越容易，把世界更紧密地联系起来。

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Redesigning our cities, transportation systems, and agricultural and industrial plants so that they are energy efficient, clean, and conveniently serve the needs of all people.

重新设计我们的城市，交通系统，农业和工业厂房，使他们是能源效率，清洁，方便的服务于所有人民的需要。

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And by the way, using energy-efficient cars and trucks can also make economic sense because transportation is one of the biggest costs for many businesses and certainly for many families.

WHITEHOUSE: President Obama on the Green Fleet Initiative

Among the energy-saving options, two promising technology switches are the electrification of transportation (electric vehicles can be about four times as energy-efficient as standard fossil-fuel vehicles) and the use of electric-powered heat pumps to deliver winter heating and hot water (heat pumps can be four times as energy-efficient as standard heaters).

CNN: Commentary: Let's get real about alternative energy

"AeroVironment and the state of Hawaii are pioneers in the EV movement and have a long partnership focused on introducing clean transportation solutions, " said Mike Bissonette, senior vice president of Efficient Energy Systems for AeroVironment.

ENGADGET: Hawaii funding deployment of up to 320 public EV chargers, islander Leafs say 'mahalo'