尊敬的先生或女士，作为贵列车的一位常客，我很失望地发现贵方提供的服务远远不能令人满意。

Dear Sir Or Madam, as a regular passenger of your train, I am completely disappointed to find that the service you provide is far from satisfactory.

youdao

在你初次与一个美国人会面时，出于尊敬，你常常可单用“先生”或“女士”来代替他们的名字。

When you first meet an American and want to be respectful, you can always use "Sir" or "madam" in place of their names.

youdao

要注意在英式英语中，如果你的邮件以以“尊敬的先生”或”尊敬的女士”开头，那应该以”你忠诚的……“结束。

Note that in UK English if you start with Dear Sir or Dear Madam, you should end with Yours faithfully.

youdao

要注意在英式英语中，如果你的邮件以以“尊敬的先生”或”尊敬的女士”开头，那应该以”你忠诚的……“结束。

Note that in UK English if you start with Dear Sir or Dear Madam, you should end with Yours faithfully.

youdao