Its system turns electricity into an invisible laser, then literally beams it, as heat, across the room to a solar cell that converts it back into electricity.

其系统能把电能转换为不可见激光，以热量的传输方式穿越房间投射到一块太阳能电池上，然后把它转换回电能。

This leaves little room for all of the other sources of greenhouse gases, such as transportation and electricity, which now account for more than 80 percent of emissions.

这样给其它来源的温室气体排放留下的空间过小，如运输和电力，它们目前占到温室气体排放量的80%。

Today, nobody says "I need to connect to a megawatt power station" - instead we assume that electricity will be available on demand in almost every room of every building we visit.

时至今日 没人会说”我想连接到一个千万伏特的发电站”—取而代之是我们约定俗成地想电力本来就会按需为我们需要进入的每一栋房屋的每一个房间准备就绪.