Above you is the wave's crest, where the water particles are undergoing their greatest acceleration.

在你上方的是波峰，在那里水粒子正经历着它们最大的加速度。

The group there stopped on a dune crest, waved.

那里的一群人停在沙丘顶上，挥手致意。

Luscious, sun-kissed fruits which hung far out upon the frail bough of the jungle's waving crest were brought to her by these tiny, nimble allies.

这些娇小、敏捷的盟友为她带来了甘美、阳光亲吻的果实，它们远远地挂在丛林波浪状的山顶脆弱的树枝上。