他兴奋地向导师宣布他要将暗物质作为自己的博士论文课题。
Excitedly, he announces to Professor Reiser that he wants to pursue Dark Matter for his thesis.
这便是笔者选择研讨公务员职位分类轨制作为论文课题的目的所在。
This is why the author chooses the study on the position classification of civil servant as the research subject of this thesis.
本论文课题的主要目标是探索一种具体的垃圾邮件过滤模型，实现并测试该模型。
This main goal of this paper is to explore a specific spam filtering model, implement and test it.
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