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1·Milestones that undergo further, more exhaustive testing can become major version releases.

里程碑进行进一步的，更详尽的测试可以成为主要版本发布。

2·As a result, very careful planning and exhaustive testing must first be done in a lab environment.

因此，必须先在实验室环境中进行非常仔细的规划和充分的测试。

3·And it's hard to imagine a simpler program than this. So we very quickly realize that exhaustive testing is just never feasible for an interesting program.

更简单的程序了，因此我们很快的意识到，对一个程序来说详尽的，测试是永远不可行的。

4·Software testing is only limited to functional testing, black box testing, the test can not be exhaustive range of functions.

软件测试工作也只是局限于功能测试、黑箱测试，测试功能范围都不可能穷尽。