Before the mass extinction, the top ocean predators were primitive sharks.

在大规模灭绝之前，高等海洋肉食生物是远古的鲨鱼。

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While the top of the ocean is well studied, its depths are more difficult to explore.

虽然人们对海洋的上层进行了深入研究，但对海洋深处的探索却比较困难。

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Visitors can see the ocean, the bay and surrounding communities from the top of the lighthouse.

VOA: special.2009.06.01

There's an angler fish at the bottom of the ocean that has a rod sticking up from the top of its head with a lure to capture other fish to fool them in thinking that this is something edible and then to themselves be devoured.

在深海中生活着琵琶鱼,这种鱼的头顶会长出鱼竿状的长刺,用于引诱和捕获其他鱼类,让它们误认为那是食物,然后它们自己就被吃掉了。

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is from the top hundred meters of the ocean."

VOA: special.2009.01.13

At the top levels of ocean racing, where Oracle Corp.

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Upon completion of the deal, Yeung's stakes in Grandtop will drop to 9.2% from his present 16.01% stake in the company, while Winning Top and Genuine Ocean, with no details disclosed on their ownership, would hold a combined 42.37% stake in Grandtop (if they fully exercise the convertible bonds issued by Grandtop).

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Sharks are the top predator in the ocean and are vital to its ecosystem.

CNN: Shark fin soup alters an ecosystem