optical illusion

例句：

1. 1. The optical illusion caused herto believe that the wall was moving.
   这个光学错觉让她相信墙在移动。
2. 2. Theartist used a variety of techniques to createan optical illusion in the painting.
   这位艺术家使用多种技巧在画作中创造了一个光学错觉。
3. 3. The optical illusion made it difficultfor the observer to distinguish between thetwo images.
   这个光学错觉让观察者难以区分这两个图像。