wave line

例句：

1. 1. The ocean's waves are constantly changing the shoreline.
   海洋的波浪不断改变着海岸线。
2. 2. The artist used a wave line to create a sense of movement in his painting.
   这位艺术家使用波浪线在他的画作中创造了一种动感。
3. 3.The scientist observed the wave line on the surface of the water.
   科学家观察了水面上的波浪线。