If you don't know the name of the person you are writing to, start business emails with either of the following:
如果你不知道邮件是写给谁的，商务信函可以用下面任意一种方式开头：
Dear Sir,/Dear Madam,
尊敬的先生,/尊敬的女士,
Dear Madame, is wrong.
“亲爱的夫人”这种写法是错误的
If you don't know whether you're writing to a man or a woman use:
如果你不知道是写给先生还是女士，可以写：
