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1·Quite a few operating system projects are started as homework or research projects.

有一部分操作系统开发是以作业或者是科研项目而开始的。

2·The intertubes are steaming with all kinds of documents and information that you can use as reference or guidelines for your projects, presentations, homework, research and what not.

网络空间中存在各种各样的文档和信息，可以用来作为项目、展示、作业、研究等的参考或者指南。

3·I'd also like to point out that I am asking this question for my own research and improvement and not as part of a code challenge, interview question, or homework assignment.

我还想指出，我自己的研究和改进，而不是一个代码的挑战，面试问题的一部分，问这样的问题，或家庭作业。