The old-fashioned lightbulbs, the incandescent bulbs -- I'm not going to ask for a show of hands of how many of you still have them in your homes, wasting energy every time you switch them on -- change them after this -- or whether we have them on the stage here at TED or not -- but those old incandescent light bulbs really should have been sold as heaters.
老式灯泡，那种白炽灯泡...... 我当然不会让你们举手告诉我 你们中的多少人家里还用白炽灯泡， 每次你打开开关就开始浪费能量 听完我的话，换掉它！ 说不定，在这里，TED 的舞台上就有白炽灯泡呢！ 那些老白炽灯泡 真的应该当为加热器卖。