Without changing light fittings, the cheapest direct replacement for an incandescent bulb at the moment is a compact fluorescent light (CFL).

不用换灯口, 目前白炽灯泡的最廉价直接替代品是荧光灯(CFL).

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Change your light bulbs: Use compact fluorescent light bulbs (CFL) instead of the standard light bulbs.

更换你的灯泡：使用紧凑型荧光灯泡(CFL的灯泡)代替标准白炽灯灯泡。

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According to IMS Research, collectively, 5.6 billion bulbs light American households and businesses, including 4.2 billion incandescent bulbs and about 1 billion compact fluorescent (CFL) bulbs that contain toxic mercury.

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