名词
中文翻译：指示剂
同义词：
['indicator', 'indicator substance']
例句：
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1.The chemical indizating agent was used to detect the presence of heavy metals in the sample.
该化学指示剂用于检测样本中重金属的存在。
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2. The doctor used a special indizating agent to treat her patient's condition.
医生使用一种特殊的指示剂来治疗病人的状况。
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3.The indizating agent was carefully mixed with water before use.
在使用前，指示剂被小心地与水混合。