For example, I was part of a student TV station that broadcast news bulletins around the campus, and during an appointment which was running very late, I said, "I'm sorry, doctor, I've got to go.
比方说，我们学校有新闻电视台 而我是成员之一 有一次会面的时间太久 我说:「医生，抱歉我得走了!」