It is a cool light resource that costs less electrical energy to generate same quantity light energy comparing to normal lamp.
它是一种冷光源，产生同样的光能消耗的电能比普通灯小很多。
Professor Harald Hass, of the school of engineering at Edinburgh University in the UK has developed a technology which can broadcast data through a normal lamp.
英国爱丁堡大学工程学院的哈拉尔德·哈斯教授研发出了一项技术：通过一盏普通灯泡就可实现数据传输。
In the first, the researchersrecruited people walking through a lobby on campus, and showed them pictures ofeither an overweight or normal-weight woman, or a lamp.
一开始，研究者在大学里招募实验参加者，向他们展示超重或正常体重女性图片还有台灯的图片。
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