英语翻译

题目

英语翻译
要有翻译,200到250个单词的样子,不要太长.
whart's search enging?给出一个理解.
不要太难的,比初学者好亿点点的样子就可以.

答案

the first and most basic job of the router is to know where to send information addressed to your computer.Just as the mail handler on the other side of the country knows enough to keep a birthday car...