名词
中文翻译：酸
同义词：
['sour', 'acidic', 'acidulous']
例句：
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1. The tomato sauce is very tasty, but it's also quite acidic.
番茄酱非常美味，但也很酸性。
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2. Acid rain can harm the environment and crops.
酸雨会损害环境和农作物。
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3. The chemical reaction between acids and bases produces heat.
酸和碱之间的化学反应会产生热量。