Dear sir

• 亲爱的先生

Dear sir的用法和样例：

例句

1. Dear sir, I made a square bet with myself that there were nineteen debauchable men in your self-righteous community.
   亲爱的先生，我和自己正正经经地打过一个赌，赌的是能把你们这个自高自大的镇子上十九位先生拉下水。