This ice is often held in place by shallow ocean bottoms or continental shelves.

这些冰层常常固定在浅海的海底或者大陆架上。

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The part of a continent under the ocean is called a continental shelf.

大陆的海底部分叫做大陆架。

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The part of a continent under the ocean is called a continental shelf.

大陆的海底部分叫做大陆架。

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