Siberian clod downwelling is from surface dive to near CMB;

西伯利亚下降流，规模大，从地表下降到下地幔下部；

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Errors are like straws upon the surface; if you want to find a pearl, you have to dive under it.

错误就像浮在水面的稻草；如果你要想寻找珍珠，你就得潜到它的下面。

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They can dive far below the surface.

他们可以潜到水面以下深处。

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The deck of some boats, such as the Taunton, a 228-foot Danish steamer built in 1902, lie just 10 feet below the surface, an easy duck dive for even an average swimmer.

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She took one more hard dive, then, exhausted, floated up to the surface, and he netted her.

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Cameron became the first man to complete a solo dive to the Challenger Deep, which is seven miles beneath the surface of the Pacific Ocean.

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