great [huge] waves，surge billows ；

[例句] 一艘捕鱼船和一艘货船在波涛汹涌的海上相撞了。 A fishing vessel and a cargo ship collided in rough seas.

[例句] 有时海上波涛汹涌，她就会晕船。 It was quite rough at times, and she was seasick.

rote，surf ；

[例句] 我们只能听到汹涌澎湃的涛声。 All we could hear was the sound of roaring water.

[例句] 不远处,太平洋的涛声轰鸣. Not far off the Pacific boomed.