complementary stain

例句：

1. 1. In the study of genetics, complementary stains are used to analyze DNA patterns.
   在遗传学研究中，互补染色剂被用来分析DNA模式。
2. 2.The scientist used a complementary stain to identify the bacteria in the sample.
   科学家使用一种互补染色剂来识别样本中的细菌。
3. 3.The researcher found that the use of complementary stains could improve the accuracy of their results.
   研究人员发现，使用互补染色剂可以提高他们结果的准确性。