World ocean levels rise.

世界海平面上升。

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The cause is unclear, but rising ocean levels and nitrogen dumped from the New York City sewer system are likely culprits.

造成这种现象的原因仍不明朗，但是海平面的日益增长和纽约下水道系统倾倒的氮化合物是可能的元凶。

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Were it to melt entirely, Greenland's icesheet would drive up ocean levels by some seven metres (23 feet), drowning coastal cities around the world.

如果格陵兰冰原完全融化，世界各地海洋水平面将会上升7米（23英尺）左右，淹没沿海城市。

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On the the 40th anniversary of Earth Day, this warming planet we live on is posing serious new challenges to human civilization: increasingly severe droughts, floods,and storms across the globe, and slowly rising ocean levels.

VOA: standard.2010.04.21

He obviously continues to worry a lot about Hansen's predicted catastrophic rise in ocean levels.

FORBES: Magazine Article

Studies by the International Union for Quaternary Research conclude that some ocean levels have even fallen in recent decades.

FORBES: Hot Sensations Vs. Cold Facts

The destructive flooding caused by the storm Sandy, which struck the U.S. East Coast in late October, revived anxieties about rising ocean levels in heavily populated coastal regions.

WSJ: Polar Ice Sheets Melt at Faster Pace