1. In early brain development, there is an overabundance of unspecified connections between neurons. 在脑的早期发育中，神经元之间有过多未分化的连接。
2. Peptic ulcer, site unspecified, unspecified as acute or chronic, without mention of hemorrhage or perforation, without mention of obstruction. 无特定位置的消化性溃疡，无法区分急性或慢性，没有提到有无出血，穿孔，或阻塞。
3. Degree requirements are vague or unspecified, lacking class descriptions and without any mention of how many credit hours are required to complete a program. 学位的要求是含糊不清或不详，缺乏一流的说明，并没有任何提及有多少信用小时须完成一个程序。
