sandwich at f( ) was the last name of an earl.
问题描述：
sandwich at f( ) was the last name of an earl.
答
first
sandwich at f(irst) was the last name of an earl.
三明治最初是贵族爵位的名称.
Earl of Sandwich是17世纪英国的贵族爵位.而现在的食用三明治则是以第4代Earl of Sandwich命名的.