名词
中文翻译：石蕊试纸
同义词：
['litmus paper', 'litmus strip例句：1. We used the litmus paper to test the pH of the solution.（我们用石蕊试纸来测试溶液的酸碱度。）2. The litmus paper turned red when it came in contact with the acid.（当它接触到酸性物质时，石蕊试纸变红。）']
例句：
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1. We used the litmus paper to test the pH of the solution.
我们用石蕊试纸来测试溶液的酸碱度。
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2. The litmus paper turned red when it came in contact with the acid.
当它接触到酸性物质时，石蕊试纸变红。
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3.The litmus paper was used as a color indicator in the chemical lab.
在化学实验室里，石蕊试纸被用作颜色指示剂。