So far,DNA testing has cleared the term is exonerated more than two hundred forty people in the United States.

VOA: special.2009.10.03

Thus far, for us it's been testing individual functions. Later in the term we'll talk about unit testing of classes.

至今为止，我们用到单元测试的地方,就是测试每个单独的方法,在后面我们会讲到类的单元测试。

麻省理工公开课 - 计算机科学及编程导论课程节选

And so what you want to do and again we'll come back to this later in the term, is something called regression testing.

却又出问题了,然后你想怎么办呢？,我们会在这学期晚些时候,讨论这个被称为回归测试的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选