to color in
01
涂色, 用颜色填充
to fill in a black and white outline or picture with colors using crayons, markers, or other coloring materials
例子
The children were asked to color in the pictures in their activity books.
孩子们被要求在活动书中的图片上涂色。
She colored in the map with bright markers to make it clearer.
她用明亮的标记填色了地图，使其更清晰。
