公开信

In a sentence

• 学生们发布了一封公开信，呼吁学校改善教学设施。

  The students published an open letter, calling for the school to improve educational facilities.

  Here, '公开信' refers to a public letter intended for broad distribution, serving as an appeal or statement.

• 这封公开信的内容引起了社会的普遍关注。

  The contents of this open letter have attracted widespread public attention.

  In this context, '公开信' is highlighted as having significant impact, resonating with the public due to its shared nature.

• 作者以公开信的形式表达了对环境保护的支持。

  The author expressed support for environmental protection in the form of an open letter.

  Here, '公开信' serves as a format of expression, demonstrating its versatility for conveying personal opinions publicly.