Columbus' Telephone Number

哥伦布的电话号码

I find in my history book there is always such number (1451-1560) after the name Christopher Columbus.

我在历史书中发现，克里斯托弗·哥伦布这个名字后面老是有(1451-1560)这几个数字。

Would you please explain why, sir?

老师，请您给解释一下好吗？

I can tell her, sir. It was Columbus' telephone number!

老师，我能告诉她。那是哥伦布的电话号码！