What does the combing of children's poems express?

The language of poetry tells the content of the picture, and the metaphor "XX is the comb of XX" will be used.

Children's poetry comb

Mom combs my hair with a comb,

I also comb my mother's hair with a comb.

The wind is the comb of the tree, combing the hair of the tree.

The boat is the comb of the sea, combing the hair of the sea.