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Why Salt Melts Ice on Roads in Winter
为什么冬天撒盐能融化路面冰层
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Salt lowers the freezing point of water below zero degrees Celsius.盐能降低水的冰点，使其低于0摄氏度。
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When salt touches ice, it makes a salty liquid called brine.盐接触冰时，会形成一种咸液，称为卤水。
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Brine spreads and breaks the bond between ice crystals.卤水扩散并破坏冰晶之间的结合力。
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This helps ice melt faster even when air temperature is cold.即使气温较低，也能加快冰的融化速度。
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Too much salt can harm plants and nearby soil over time.过量用盐会随时间推移损害植物及周边土壤。
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Cities use just enough salt to keep roads safe and clean.城市仅使用适量盐来保障道路安全与清洁。
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Scientists test new mixtures to reduce environmental impact.科学家正在测试新型混合物以减少环境影响。
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It is a small but powerful chemistry trick used every winter.这是每年冬季都在使用的微小却强大的化学技巧。