Shady businesses apply high-pressure sales tactics, claiming they're offering you the last availableunit in a timeshare or that only one more car model is on the lot.
可疑的的商家通常都采取高压策略，声称限时抢购，最后机会或者存货不多云云。
2
You can also handle expected exceptions using the constructs available to you in unit testing frameworks such as JUnit.
您还可以使用JUnit这样的单元测试框架中可用的构件来处理预期的异常。
3
There are many unit testing frameworks available for servlet-based applications.