1.The microprocessor, sometimes called the CPU (for central processing unit), is the most vital of your computer's internal "organs".
微處理器，有時(shí)也稱做CUP（中央處理器），是計(jì)算機(jī)最重要的內(nèi)部“器官”。
2.An IBM PC—compatible computer is based on one of several microprocessors developed by Intel Corporation.
IBM PC兼容機(jī)都是基于Intel公司開發(fā)的幾種微處理器中的某一種。
3.The microprocessors, 80286.80386.80486.80586…,form a family that has evolved since 1980—1981.
微處理器80286，80386，80486，80586等等組成了自1980—1981年第一臺(tái)IBM PC機(jī)出式后發(fā)展起來的家族。
New Words & Terms
central 中央的
vital 致使的；重要的
internal 內(nèi)部的
organ 器官
compatible 兼容的
be based on 在……的基礎(chǔ)上，基于……
several 幾個(gè)
develop 發(fā)展；開發(fā)
corporation 公司
form 形成；構(gòu)成
family 家庭
注：
1.sometimes called the CPU... 這是一個(gè)過去分詞短語，修飾microprocessor.相當(dāng)于一個(gè)非限制性定語從句，即which is sometimes called CUP.
2.developed by Intel Corporation 也是一個(gè)過去分詞短語，修飾它前面的Microprocessors,相當(dāng)于一個(gè)限制性定語從句，即which have been developed by Intel Corpotation.
3.that has evolved sice 1980-1981是一個(gè)定語從句，that 代表被修飾的先行詞family.