Could you sign the hotel register please, sir?

先生，请在酒店登记簿上签字好吗？

《牛津词典》

"Please, sir," Peter explained, "a lady lies very ill."

“请，先生，”彼得解释说，“一位女士病得很重。”

youdao

Please, sir, I would come home if I was you.

拜托了，先生，如果我是你，我会回家的。

youdao

Hip Hop and Its Critics "Sir, please turn around and face me, " the Hartsfield-Jackson airport security employee directed me.

NPR: Author Comes to Hip-Hop Music's Defense

Yes, sir, please give us your name and your affiliation.

CENTERFORSECURITYPOLICY: Gaffney debates on Hugh Hewitt show

Sir, could you please help small businesses by allowing, some way, somehow, money we pay to the bank in principle to not count against our income, and put us in the "richest" before we ever seem a dime, and allow us to invest in this huge engine to drive economic recovery?

WHITEHOUSE: Online Town Hall