另一个例子是甲基橙，它在酸性溶液中为红色而在碱性溶液中为黄色。
Another example is methyl orange, which is red in acids and yellow in alkali solutions.
另一个例子是甲基橙，它在酸性溶液中为红色而在碱性溶液中为黄色。
Another example is, which is red in acids and yellow in alkali solutions.
另一个例子是甲基橙，它在酸性溶液中为红色而在碱性溶液中为黄色。
Another example is, which is red in acids and yellow in alkali solutions.
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