1. A caste system consists of ranked groups, each with a different economic specialization. 种姓制度由等级群体组成，每个群体具有不同的经济专业化。
2. Hundreds of others are more obscure in their meanings and testify to the amazing specialization in medieval arts, crafts and functions. 其他成百上千的词在含义上更加模糊，证明了中世纪艺术、工艺和功能的惊人专业化。
3. Evidence of specialization in producing raw materials and in manufacturing ceramics and textiles indicates differentiation of labor within and between communities. 生产原材料和制造陶瓷和纺织品的专业化证据表明了社区内部和社区之间的劳动差异。
4. But in the long run, too much specialization doesn't pay off. Business, which has been flooded with MBAs, no longer considers the degree an automatic stamp of approval. 但从长远来看，过多的专业化并不会带来回报。商业界已经有了大量的工商管理学硕士（MBA），他们不再将学位视为一种能自动认可的标志。
5. The orthodox view of human handedness is that it is connected to the bilateral specialization of the brain that has concentrated language-processing functions on the left side of that organ. 关于人的利手习惯的传统观点是，利手习惯与大脑的双侧专门化有关，而语言处理功能集中在大脑的左侧。
