undulate

v. /ˈʌndʒəleɪt/ C1

起伏；波动

To move in smooth wave-like motions.

仙境例句

The long line of seals and turtles seemed to undulate like a wave along the shore.

海豹和海龟排成的长队沿着海岸起伏，就像一道波浪。