Average sea level pressure has been getting higher in China, particularly in North China in winter.

中国海平面气压的变化总的来说是增大的，尤其是北方的冬季。

youdao

Therefore, it was thought only to a firm with average sea-surface elevation as the starting surface.

因此，人们就想到只能用一个确定的平均海水面来作为海拔的起算面。

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The hot weather-and hot water-has come to the Caribbean, which has seen above average sea surface temperatures since January.

炎热的天气和温热的海水转移到了加勒比海，此海域从一月份起表面温度就一直高于平均值。

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The scientists say the average Arctic sea ice extent last month was about five million square kilometers.

VOA: special.2009.10.27

He says the sea floor is, on average, 4,000 meters deep.

VOA: special.2009.01.13

The land surface pokes just a couple of meters on average above sea level, making it the lowest-lying nation in the world.

VOA: standard.2009.10.17

The average sea temperature around Guernsey in the first week of April is 9.5C (49.1F), according to the island's meteorological office.

BBC: Guernsey fishermen face losses due to cold weather

Already, average sea level rise has doubled in a decade due to the destabilisation of the Arctic and Greenland ice shelves.

CNN: Climate change action: Too little, too late?

And with scierntists predicting an average sea level rise of between 38 and 55cm by 2100, some small island states could disappear beneath the waves.

BBC: By BBC News Online Environment Correspondent Alex Kirby