英语翻译

问题描述:

英语翻译
This separation,too,is generally carried furthest in the countries which enjoy the highest degree of industry and improvement ; what is the work of one man,in a rude state of society,being generally that of several in an improved one.
这句话分号后面的部分我很不理解,请帮个忙咯.

工业化程度和发展程度最高的国家,这种隔离普遍存在的程度最深.在一个野蛮的社会中,一个人的工作量相当于进步社会中几个人的工作量.
that of several中的that指代前面的work,one man 和several对应.