The waves are not noticeable out at sea because of their long wave length.

这些海浪在海上看起来不是很明显，因为它们的波长很长。

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They were walking along the shore when a huge wave appeared out of nowhere, sweeping them out to sea.

他们正沿着海岸走着，突然冒出来一个大浪，把他们卷到了海里。

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It's well known for the Severn Bore—a tall wave of water that regularly—flows up the river from the sea.

它因塞文潮而闻名，塞文潮是一种定期从海里沿河向上流动的巨浪。

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The device is a hinged flap connected to the sea-bed which uses wave power to deliver high-pressure water to an onshore turbine.

BBC: Commercial hopes for wave energy

Our island fortunately had cliffs toward the sea where the 20-25 foot wave hit and it did come up on the island.

CNN: Tsunami tragedy: Your e-mails

The company faces a tidal wave of litigation and an epidemic of stories about oil-drenched sea birds and devastated wetlands.

ECONOMIST: Schumpeter