bounce up造句怎么写

2、As the beetle flies, or surfs, the up and down force of its wings and the attachment of the claws make the surface of the water bounce up and down like a trampoline.

1、Even though, the boy liked to bounce up and down.

3、The fat man sat steadily with his hands on his thighs. After the two sedan chairmen in front of him passed by, the long tips of the reed pole would bounce up and scratch him.