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1·A small segment of the urban society started to specialize in nonagricultural tasks as a result of the city's role as a regional center.

由于该城市是区域的中心，城市社会中的一小部分人开始专门从事非农业工作。

2·A college education will enable me to specialize in a certain field of knowledge, such as medicine or law, preparing me to become a professional.

大学教育将使我能够专注于某些领域的知识，例如医学或法律，让我成为专业人士。

3·He decided to specialize in entomology after graduation.

他决定毕业后专攻昆虫学。

4·He decided to specialize in entomology after graduation.

它决定毕业后专攻昆虫学。

5·This company used to specialize in producing home computers.

这家公司过去专门生产家用电脑。

6·Rice responds that every scholar has to specialize in something.

赖斯的回答是，每个学者都必须有所专长。

7·I want to specialize in this field, and build an exciting career.

我要专注于这一领域，并建立一个令人兴奋的职业生涯。

8·After she qualified as a lawyer, she decided to specialize in contract law.

作为一名律师资格后，她决定专攻合同法。

9·After she qualified as a lawyer, she decided to specialize in business law.

在取得律师资格后，她决定专攻商法。

10·After I did my engineering degree, I began to specialize in computer technology.

读完工程学位后，我就开始专攻计算机技术。