undulating movement造句

1、the undulating movement of the surface of the open sea.

2、Their encircling and undulating movement contrasts pleasurably with the straight trunks of erect trees.

3、This is mainly due to the undulating movement and to the use of the same character proportions in both versions.

4、The result shows that the literature amount of the different subject is not balance and the general trend is undulating movement ;