调查结果表明，LinkedIn是最受中小型企业青睐的社交网站，使用这一专业网站的企业比例达到了73%。

LinkedIn is the most popular site, with 73% of small businesses using the professional network, according to the poll.

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它还将使用一种“自下而上”的方法，这种方法基于良好的习惯和专业经验，而不是采取“自上而下”的措施。

And it would use a 'bottom-up' approach, embedded in good practice and professional experience, rather than resorting to 'top-down' measures.

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研究报告的作者应该试图使用尽可能简单的语言同时又不牺牲报告的专业性质。

The research writer should try to use the simplest possible language without sacrificing the professional quality of the report.

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If you're going into any science that uses mathematics, chemistry, or engineering, or even economics -- you should find the contents of that useful.

如果你要进入任何要使用数学的理工科专业,比如化学,工程,甚至是经济学,你会发现书上的内容很有用

耶鲁公开课 - 基础物理课程节选