brush feed

例句：

1. 1. She used a brush to feed the baby bird.
   她用刷子喂小鸟。
2. 2. The farmer used a brush to feed the cows.
   农民用刷子喂牛。
3. 3. The artist used a brush to feed the paint onto the canvas.
   艺术家用刷子将颜料涂抹在画布上。