在第五行中，TestCase . setUp被重载，从而对测试下的对象进行初始化或者实例化。

In line 5, TestCase.setUp is overridden to initialize or instantiate the object under test.

youdao

第四行说明这个列在“ clients ”表中，最后，第五行表明我们只对“ Gold ”客户感兴趣。

Line 4 tells us that this column is in the "clients" table. Finally, the fifth line indicates that only "Gold" customers are of interest to us.

youdao

我想让你看一看课文的第五行，好吗？

May I refer you to the fifth line in the text?

youdao