有一种方式是运用“立体光学技术”，在两个角度拍摄画面。
One way of doing so is to use "stereoscopic" optical technologies, in which scenes are filmed from two angles.
Pascal Cotte认为达芬奇是分层完成名画《蒙娜·丽莎》的，油画的最上面一层是某种特殊的透明色料层，其光学特性增加了人物面部的三维立体效果。
Pascal Cotte said Leonardo built the painting up in layers, the last being a special glaze whose optical properties increased the illusion of a three-dimensional face.
CD - ROM原是一种用于制作CD立体声系统的小型圆盘的光学技术，现在它已经被用来为计算机储藏数据。
CD-ROM is an optical technology that is used to make compact disks for CD stereo systems; it has now been adapted to store data for computers.
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