Only when the writing purpose is held tightly, an official document can be given an object in view, and also its social function to influence objective reality can be brought into full play.

只有充分把握住行文目的，公文才能写得有的放矢，其影响客观实际的社会功用才能得到最大限度的发挥。

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Chapter One of the thesis mainly elucidates my writing purpose, research aim and research method, also literature of current research situation and results of this topic is reviewed.

论文第一章主要阐明了我的写作动机、研究目标及研究方法，并对本课题的研究状况和研究成果进行了文献综述。

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Historians say that by writing the Emancipation Proclamation, Lincoln established a moral purpose for the war.

VOA: special.2009.02.09

If you're writing a one line function, whose sole purpose in life is addition, and, clearly, this is about addition, well, then it's, in fact, A reasonable to use a shorter symbol like A, but I do have to specify it's type.

如果你在写一个一行的函数，它唯一的目的是,做加法，显然这是关于加法的，好的，实际上，用一个短的标识符是合理的，像，但是我必须指明它的类型。

哈佛公开课 - 计算机科学课程节选

To develop the trait of patience in investing, consider writing down the purpose of each investment (such as long term growth) and your strategy (buy and hold) including possible downsides, then reviewing your notes before making any changes on any investment.

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Either make the assistant the sole object of your attention, stating your purpose, writing thank-you notes, easing toward the boss -- or try reaching the exec directly.

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The sentences should be complex, with the use of subordinate clauses and writing adapted to "suit audience and purpose".

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