So make sure you're not one of them, especially if you sign your letters saying: " Sincerely, " or: " Yours sincerely, " which is a very common way to end a general letter or a general business letter.
因此,请确保您不是他们中一员,尤其是如果您在信件上签名时说:“谨致” 或:“谨致” ,这是结束一般信函或一般商业信函一种非常常见方式。