Storyboards have also been proven effective in designing the test cases for the User Interface, as a set of paths through the state machine.
情节串联图板也被证明在设计用于用户接口的测试实例时是有效的。
In some cases, additional vacation days have proven increased year-round attendance for employees.
有一些例子证明，额外的假期能提高员工全年的出勤率。
On the other hand, in the cases of therapies that have been proven to not add longevity, cost does become an important consideration.
另一方面，事实证明一些治疗方法不能延长病人的寿命，在这种情况下，花费确实成为一个值得考虑的重要问题。
On the other hand, in the cases of therapies that have been proven to not add longevity, cost does become an important consideration.
另一方面，事实证明一些治疗方法不能延长病人的寿命，在这种情况下，花费确实成为一个值得考虑的重要问题。
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