The interface is different for each concrete instance.
该接口对于每个具体的实例是不同的。
It is showed through a concrete instance that the method is simple, quick and accurate.
通过实例证明，该方法具有计算简单、快速、精度高等优点。
There are instance when justice becomes concrete.
有些情况下，正义变得很具体。
Lastly, a concrete diagnostic instance is given.
最后给出了一个系统的诊断实例。
Lastly, a concrete diagnostic instance is given.
最后给出了一个系统的诊断实例。
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