英语语法分析

Testing: test and retest.

测试：测试和重新测试。

You retest your code, and you find it still doesn't work.

现在重新测试代码，您发现上述方法仍然不能工作。

Of course, they could study up and retest just like with driver's licenses.

当然，他们可以继续学习，重新测试，就像考驾照那样。