Most computer systems have some way to store information permanently, whether it is on cassette tapes, floppy disks, or hard disk fixed inside the system unit.
无论是将信息存储在盒式磁带上， 软盘上还是主机箱内的硬盘上，大多数计算机系统都能将信息永久性地保存起来。
Most computer sys tems have some way to store information permanently, whether it is on cassette tapes, floppy disks, or hard disk fixed inside the system unit.
无论是将信息存储在盒式磁带上， 软盘上还是主机箱内的硬盘上，大多数计算机系统都能将信息永久性地保存起来。
Sabre created American's current system, and it started 50 years ago as a technology unit inside the airline.
美国航空目前的系统是由Sabre创建，而从50年前开始Sabre就是该公司内部的技术部门。
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