What's more there's nevermuch distance between one ordinary wave's crest and the one following it.

更重要的是常波前后的波峰之间并没有太大的距离。

Ordinary waves can be rather tall, but they don't go very deep.

常波可能很高，但是它们水体波动的深度并不深。

In deep water, a tsunami raises the ocean's surfaceonly about one or two feet—much less than ordinary ocean waves.

在深海中，海啸只会掀起一或两英尺的海浪-远远低于普通的海浪。

While ordinary waves only tug at the surface water, tsunamischurn the water all the way to thedeepest ocean floor!

尽管常波只是在水表面生成，但是海啸可以在最深的海底引起水层波动使其产生。