富含石油的深海海床遍布全球。

Deep sea floors rich in oil span the globe.

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同样，从高纬度深海海床释放致命甲烷的可能性也比较低。

The chance of a catastrophic release of methane from frozen sub-sea stores at high latitudes is also rated low.

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日本研究者在清理长崎的深海海床时发现一艘13世纪蒙古战船的遗骸。

Japanese researchers scouring the deep seabed around Nagasakiuncovered the remains of a Mongol shipwreck from the 13th century.

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