Many concepts and technologies had to come together to make the GUI possible: the mouse, memory-mapped video, powerful processors, and pop-up Windows.

许多概念和技术的同时出现使得图形用户界面成为可能，如鼠标、内存映射视频、功能强大的处理器，以及弹出窗口。

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They use a system of video cameras, radar sensors and laser range-finders to detect other vehicles, while following a pre-set route mapped out by drivers in ordinary cars.

这些汽车利用一套包括视频摄像机、雷达传感器和激光测距仪在内的控制系统侦测道路上的其他车辆，同时按照由普通汽车驾驶员制定的预先设定路线行驶。

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Afterwards, equivalence classes are mapped into matrix representation. Therefore various factors are computed to rank the similarity of the selected video clips by characters of the matrix.

然后把等价类映射为矩阵表达形式，再通过矩阵的特性来度量影响片段相似度的不同因子，实现了相似片段的排序。

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