「高清」的意思是画面非常清楚，看电视、电影或者视频的时候常常用到这个词。

"高清" means the picture is very clear; this word is often used when watching TV, movies, or videos.

现在很多手机和电视都支持高清，图像看起来又清楚又漂亮。

Nowadays, many phones and TVs support 高清, making images look clear and beautiful.