Jim said he felt like an otter, since he loved to turn and twist in the deep pools and could swim underwater a long way.

吉姆说他感觉自己像只水獭，因为他喜欢在深水池里转来转去，而且能在水下游很长一段距离。

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The boat finally grounded on a soft, underwater bank.

那条船最终在一个松软的水下浅滩搁浅了。

《柯林斯英汉双解大词典》

This was the key to a successful underwater expedition.

这是水下探险成功的关键。

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The lines represent a mountainous underwater area in the Atlantic Ocean.

VOA: special.2009.05.06

It is a very popular place for visitors who want to learn more about the wonders of the underwater world.

VOA: special.2009.09.18

He began to draw a cartoon about sea creatures as a way to teach students about underwater life.

VOA: special.2009.08.21

One method:Drag a shipment underwater behind a fishing boat.

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But Australian miner Eddie Sigai found himself on the wrong side of a crocodile when one grabbed his arm and dragged him underwater at a Queensland creek.

BBC: Who, what, why: How do you fight off a crocodile?

That would help explain why, after slipping underwater in a hotel bathtub, Houston was unable to help herself.

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