They spent many days cruising the northern Pacific Ocean.

他们花了很多天巡游北太平洋。

《柯林斯英汉双解大词典》

Scientists studied the Great Lakes in America and the Arctic Ocean in northern Canada.

科学家们研究了美国的五大湖和加拿大北部的北冰洋。

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The report said the naval presence has helped control piracy, but noted that Somali pirates have expanded their range to attack ships in the northern Indian Ocean and the southern Red Sea.

报告说，海军的存在有助于控制海盗，但也指出索马里海盗已经扩大了在印度洋北部和红海南部袭击船只的范围。

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He warns that the Arctic Ocean could be free of ice during future Northern Hemisphere summers.

VOA: special.2009.10.27

The data showed that the conditions were perfect for a monstrous storm in the northern Atlantic Ocean.

CNN: Forecasting "The Perfect Storm"

But even exhaustion doesn't keep me from getting up at 3 a.m. for yet another astounding view: the swirling Northern Lights, like ocean bioluminescence in the sky.

WSJ: Heli-Skiing in Greenland

Lake Powell is huge -- 186 miles long, with 1, 960 miles of shoreline (more than the Pacific Ocean coastline from northern Washington to southern California).

FORBES: Fact and Comment