But proving these things in specific cases is always very difficult.
但是，要在具体案子中证实这点总是非常困难。
With a traditional solution, sorting might be difficult, if not impossible in some cases.
使用传统解决方案时，排序可能很难，虽然在某些情况下并非不可能。
In most cases, these issues only get more difficult over time.
多数情况下，这些问题只会随着时间的推移而变得更加棘手。
What both views gloss over is that in real life there are difficult cases.
这两种观点都忽略了现实生活中的困难处境。
This results in test cases being difficult to keep up-to-date.
这导致测试用例很难保持最新。
However, this is often very difficult and, in many cases, almost impossible.
但很多情况下，这通常是非常困难的，几乎不可能。
Juries are expensive and we only use them in the most difficult cases.
陪审团很耗资，因而只在最困难的案件中采用。
Because of parts structure limit, in many cases, single free forging is also very difficult.
由于受零件结构的限制，在很多情况下，单纯自由锻也十分困难。
The cases are more difficult and longer, and we will typically discuss them in class.
个案则会比较复杂，且需要花较多时间，我们会在课堂上进行专门的相关讨论。
The cases are more difficult and longer, and we will typically discuss them in class.
个案则会比较复杂，且需要花较多时间，我们会在课堂上进行专门的相关讨论。
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