「打马赛克」英文怎么说？

pixelate 

打马赛克、照片视频的映像模糊技术

Let's have a look at 下面的例句：

Why did the小妞pixelate her face, man ?

哎老兄，为什么那个小妞的脸部打上马赛克呢 ？

Why did she pixelate her face in the picture? 

为什么照片里她的脸要打马赛克呢？

This image was pixelated due to copyrighted material.

由于这张图受了版权保护，所以打了马赛克。