"Dear Sir," she began.
“尊敬的先生”，她开始写到。
"A pleasure to meet you, sir," he said.
“很荣幸见到您，先生，”他说。
Could I interest you in this model, Sir?
先生，请你瞧瞧这个型号好吗？
"We shall, sir," said Thorne, with conviction.
索恩坚定地说：“先生，我们会的”。
Could you sign the hotel register please, sir?
先生，请在酒店登记簿上签字好吗？