to see, to watch, to observe, to look at something / to look over, to examine, to judge / to take care of, to look after, to keep an eye on somebody

disgraceful, shameful, indecent / shabby, unsightly

in a flash, in an instant

(computer graphics) ray tracing

(Internet slang) Abbreviation of ブルーバック.

blue jeans

light blue (color)

(Internet slang, video editing) blue screen

(cosmetics) being blue-based; having a blue undertone to one's skin

blue tarp