随着演出市场的曰渐规范及介绍函制度的实施，剧团的自由流动开始受到限制。
With the performing market norm implemented and the letter system established day by day, the freedom of the troupes were restricted.
随函附上最新的商品目录，其中第14页详细地介绍了我们的激光打印机的特色。
Enclosed is our latest catalog in which Page 14 details the unique features of our laser printers.
几何和量子场论课程是用泛函积分的语言对微扰量子场论的严谨的介绍，主要针对数学家设计。
Geometry and quantum field theory, designed for mathematicians, is a rigorous introduction to perturbative quantum field theory, using the language of functional integrals.
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