The results are instantaneous because the system has created a database (also known as an index) to tell you where files are located.
结果是即时的因为系统已经创建了一个数据库（也被称为索引）来告诉你文件存储在何处。
2
Researchers at MIT's Lincoln Lab have built a radar system that can penetrate walls enough to give an "instantaneous picture of the activity on the other side."
麻省理工学院林肯实验室的研究人员创建了一个雷达系统，可以穿透墙壁，给出一张墙后活动的瞬间图像。
3
A split mirror is an identical, independent, and instantaneous copy of a disk volume that can be attached to a different system.