crestless wave

A crestless wave rolled slowly across the open sea.

一阵无浪花的涌浪缓缓滚过开阔的海面。

We sat on the deck and watched the crestless wave pass beneath us.

我们坐在甲板上，看着无浪花的涌浪从我们下方经过。

The boat rose and fell with the crestless waves, and the ride was smooth.

小船随着那些无浪花的涌浪起伏，行驶得很平稳。