我写这封信的原因是我有一个关于写作风格的问题。
The reason why I write this letter to you is that I have a problem in respect of the writing style.
因此,我写这封信是希望引起您对这一问题的关注,能够很大程度地改进现状。
Therefore, I am writing this letter to draw your attention to the matter in the hope that the present situation will be much improved.
这封信是关于购买某些仪器问题的。
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