Well a number of you have spent this past week playing with this particular tool which is a project the course has been working on for some time in an effort to make it easier and more social to actually shop for courses.

在过去的一周里,已经有一部分人开始使用这种特殊的工具了,这门课程一直在致力于这一工具的开发,目的是为了让课程变的更简单,选课更人性化。

哈佛公开课 - 计算机科学课程节选

To get sales leads, our blog is our number one tool.

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Our number one tool, the knife, ranked high on everyone's list.

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Twitter chats have become a practical communicative tool for a number of reasons, according to Abayomi-Paul.

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