regressionn.复原；退步；回归（一种数学方法）regression forecast回归预测regression function回归函数regression modeling回归建模regression of nodes交点退行regression constant回归常数regression neurosis退行性神经症regression spectrum回归谱regression analyzes回归分析regression staining退行染色regression analysisn.回归分析；计量分析

1. Removing tests from a regression test suite just because they don't add coverage.
   因为有些测试不能增加覆盖率而将它们从回归测试套件中去掉。
2. Regression testing is most often used in testing maintenance to existing programs.
   回归测试最常用在已有测试的测试维护。