在如今的博物馆里可以找到十六世纪教师使用的许多经典文本的副本，包括描述基于文本的口语课程的旁注。
Copies of many of the classical texts used by sixteenth-century teachers, including marginal notes describing the oral lessons that were based on the texts, can be found in museums today.
服务发现的最简单形式是从服务提供者处请求一个服务描述的副本。
The simplest form of service discovery is to request a copy of the service description from the service provider.
从实际观点来看，子文档确实是上述所描述的要处理的内容—它是用英语写的，然后将它转交给翻译小组，生成已翻译的副本。
From a practical standpoint, the subdocument is handled exactly as described above — it has been written in English and then turned over to a translation team that then produced translated replicas.
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