许多机构，尤其是哪些K-12以及更小的机构，都没有这种专门知识或技能。

Many institutions, especially those in K-12 and smaller institutions, do not have this expertise.

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鉴定结论是具有专门知识的人接受委托或聘请，运用自己的知识、经验或技能，对案件中专门性问题作出的判断或推论。

Appraisal conclusion is the judgment or inference about the special issues in cases that drawn by expert who accepted assignment or appointment and based on one's knowledge, experience or skills.

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