Each behavior has innate mode and adapting significance.
每种行为都有其固有的模式和适应意义。
There is always a positive intention behind each behavior.
每个行为背后均有正面的动机。
For each behavior we normally test a typical case plus the extremes of each range because this is often where things go wrong!
对于每个行为,我们一般会运行一个加上边界范围极限的测试用例,因为这个经常是出问题的地方。
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