colour in
入门 (A2) neutral
To use coloured pencils or crayons to put colour inside a drawing.
"The children spent the afternoon colouring in pictures of animals."
在语境中听
Two Brits try REAL Sushi in Japan!
JOLLY · 17:24
Look at the different shades of colour in one mouthful.
Wild knots
Henry Segerman · 6:21
There's only one strand to colour in, and we have to use at least two colours.