名词
中文翻译：格氏染色剂
同义词：
["Gram's stain", 'Gram staining agent']
例句：
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1. The scientist used a Gramstain to identify the bacteria in the sample.
科学家使用格氏染色剂来鉴定样本中的细菌。
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2. The teacher explained the conceptof Gram stain using a simple example.
老师用一个简单的例子解释了格氏染色的概念。
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3. The chemical was used to stain thefabric and reveal its structure.
这种化学物质被用来染色，揭示其结构。