STEM与日常科技·英语30篇（8）
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LED Lights Use Less Power
LED灯为何更省电
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LED lights shine bright but use very little electricity.LED灯亮度高，但耗电量极低。
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They make light without getting hot like old bulbs.它们发光时不发热，不像传统灯泡。
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One LED bulb lasts ten years or more.一颗LED灯泡寿命可达十年以上。
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It uses about 75% less power than a regular bulb.耗电量比普通灯泡减少约75%。
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LEDs work well in streetlights, cars, and flashlights.LED广泛用于路灯、汽车灯和手电筒。
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They need no mercury, so they’re safer to throw away.不含汞，废弃时更安全。
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Cities switch to LEDs to cut power costs and CO2.城市改用LED以降低电费和二氧化碳排放。
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Your home can save money and help the planet too.你家也能省钱，同时保护地球。