... 应急灯光 emergency lighting 特殊用途照明 special-purpose lighting 纤维光学照明 fiber optic lighting ...
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special-purpose lighting 特殊用途照明
purpose lighting
目的照明
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The era of LEDs for general-purpose lighting really began last decade, but the technology has been around since the 1960s.
FORBES: A New Source of Green Energy: LEDs
That is, here is a glaring waste of electric power, fully lighting a business through all its nighttime inactivity, every single night, for no purpose at all except to advertise its presence to almost empty midnight streets.
FORBES: After Sandy in Manhattan: Now Comes the Hard Part
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