Replacing one regular light bulb with a compact fluorescent light bulb will save 150 pounds of carbon dioxide a year.
Replacing one regular light bulb with a compact fluorescent light bulb will save 150 pounds of carbon dioxide a year.
把一个普通灯泡换成节能灯泡，可以每年减少150磅二氧化碳排放（1磅约等于0.45千克）。