名词
中文翻译：反应指示器
同义词：
['response indicator', 'reaction marker']
例句：
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1.The new drug has a reaction indicator that can detect the presence of certain chemicals in the bloodstream.
这种新药有一个反应指示器，可以检测血液中特定化学物质的存在。
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2.The research team used an enzyme as a reaction indicator to monitor the progress of the reaction.
研究小组使用一种酶作为反应指示剂来监测反应的进展。
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3.The scientist attached a small piece of paper to the reaction indicator to record the results.
科学家将一小片纸粘在反应指示器上以记录结果。