Great chunks of the ice crust, which has covered the mountains through the winter, break off and drop heavily into the thawing sea beneath.

冬日里覆盖着山脉的大块冰壳开始破裂开来，重重地跌落到山脚下正在融化的海水里。

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By 2011 scientists aboard a Japanese deep-sea drilling ship called Chikyu hope to start drilling through a thin piece of oceanic crust to reach Earth's mantle.

2011年，科学家们将登上日本一艘名为“地球号”的深海钻井船，他们希望通过钻开一块薄的大洋地壳到达地幔。

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This is part of the system of mid-ocean ridges that form as the tectonic plates of the Earth's crust move apart-a process known as sea floor spreading.

印度洋脊是中大洋脊的一部分，中大洋脊是地壳分离的地球板块形成的。这一形成过程被称为海底扩张。

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Try the borscht (tangy and tasty), the pan-roasted sea scallops on a crab cake crust, the pan-roasted chicken with a morel flan and the spice-rubbed Long Island duck.

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