Windmills from old car parts and car batteries and artificial sunlight from carbonarclamps using pencil leads is possible, however.
可以从破旧的车辆里拆取风叶和蓄电池，再用铅笔芯制造弧光照明灯获取人工照明是有可能的。
2
Indoors light is furnished by carbonarclamps incandescent bulbs and quartz bulbs. the basic indoor lights are spotlights and floodlights. spotlights throw a beam of concentrated intense light.