The course consists of ten core modules and five optional modules.
这门课程包括十个必修单元和五个选修单元。
An alternate approach is to have a top-level driver schema that includes all the prerequisite and core modules.
另一种办法是让顶层驱动模式包括所有的条件与核心模块。
The software is easy to launch from scratch, and its core features and portfolio of contributed modules make it flexible, extensible, and adaptable.
本软件易于从无到有地启用，其核心特性和有用模块组合使之灵活、可扩展、可修改。
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