Common Cause, the largest citizens group in the us, did a study which showed that a letter to the editor was one of the most effective ways of influencing politicians.

共同事业，这个全美最大的公民组织，做了一项调查，其结果显示：给编辑写信是最有效的影响政客的方式之一。

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When making a resignation letter, your aim is to not only leave your company, you are also leaving a good impression, which may help your cause in applying for a job.

写辞职信的目的，并不是仅仅为了离开，同时也是要留下一个好印象给公司——这会对你未来的求职有所帮助。

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The FDA recently sent General Mills a letter saying that Cheerios was being "promoted for conditions that cause it to be a drug" -lowering cholesterol 4% in six weeks.

FDA最近给通用磨坊发了一封信函，说Cheerios被“提升条件，使它成为一个药物”——在六个星期内降低胆固醇4%。

youdao

Why? Well, out presumably 'cause it's output, a because it's the first letter of the alphabet.

为什么？也许是因为out代表是输出吧，而a则是字母表的第一个吧。

哈佛公开课 - 计算机科学课程节选

When feelings run high, an ill-judged letter can cause as much emotional damage as any dashed-off online posting.

BBC: A Point of View: Mourning the loss of the written word

While technical in nature -- using the word "hydrocarbon" to refer to oil, for example -- the letter depicts a process that failed to detect a potential cause of the disaster.

CNN: STORY HIGHLIGHTS

The absence of senior Tories is likely to be a cause of greater concern to CBI members, some of whom have signed a letter of support for William Hague.

BBC: Tories snub CBI dinner