同事之间该如何称呼？

同事之间该如何称呼？ 　　F: Welcome aboard! 　　欢迎你来本公司工作! 　　C: Thank you, I'm delighted to be working here, Mr. Buchwald。 　　谢谢。我很高兴能来这里上班，布奇华先生。 　　F: Call me Buck, will you? My name is Reginald Buchwald but everybody calls me Buck. It's easier。 　　叫我布客就可以了。我的全名是雷奇纳客·布奇华，但是大家都叫我布客。这样比较方便。 　　C: I'd prefer to call you Mr. Buchwald. Isn't it rather disrespectful to make a nickname out of one's family name? 　　我更愿意称呼您布奇华先生。用别人的姓做昵称，不是很不礼貌吗? 　　F: Well, President Eisenhower was known as Ike. Everybody in this company all the way up and down the line is called by his or her first name。 　　嗯，艾森豪威尔总统也被呢称为艾克。我们公司的上上下下都是直呼每个人的姓。 　　F: It's been our tradition ever since the company was small. And don't worry about the 'disrespectful' business. OK? 　　在我们公司规模很小的时候这就已经形成传统。不要担心不礼貌的事了，好吗? 　　C: I'll try。 　　我会试试看。 　　F: Good. But when there are outsiders, like business people from other companies, it might be good to address your higher-ups as Mr., Ms. or whatever is appropriate. To those outside the company, it may be interpreted as a sign of flippancy or lax discipline. Get it? 　　好。不过。如果有外人在时，比如其他公司的人，最好能称呼你的上司为先生、女士或任何适当的称谓。对外人而言，我们的习惯可能会是轻率的和纪律松懈的现。明白吗? 　　C: Yes, sir。 　　是的，先生。 　　F: (Laughing) And don't 'sir' me either. Now I'll show you your private office。 　　(笑着说)也不要叫我先生。现在，我带你去看你的私人办公室。