科学素养与生活应用·英语30篇（3）
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Why Solar Panels Need Sun
为什么太阳能板需要阳光
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Solar panels change sunlight into electricity.太阳能板将阳光转化为电能。
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They work best when the sun shines brightly.阳光明媚时，太阳能板效率最高。
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Clouds or shade make them less effective.云层或阴影会降低其效率。
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Even on cloudy days, they still make some power.阴天时，它们仍能产生部分电力。
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They do not work at night without stored energy.夜间若无储能，太阳能板无法工作。
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Batteries can save extra power for later use.电池可储存多余电力以备后用。
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Sunlight is free and clean energy source.阳光是免费且清洁的能源。
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This helps reduce pollution from coal or gas.这有助于减少燃煤或燃气造成的污染。