Heavy rain and melting snow have swollen the river to its highest level in decades.

暴雨和积雪融化已经使该河流水位到达几十年来的最高水平。

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Mark Serreze, director of the American National Snow and Ice Data Center (NSIDC) in Colorado, thinks that sea level rise is going to be a bigger and bigger problem, as we move through the 21st century.

美国国家冰雪数据中心（NSIDC）位于科罗拉多州，其主任马克·塞雷泽（Mark Serreze）认为，随着我们进入21世纪，海平面上升将成为一个越来越大的问题。

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Soon the trees would creep down into the snow until only their tops stuck out, and then the tops would disappear too and everything would level itself off and be flat.

很快，树木都被雪淹没了，直留下它们的树顶的一抹小梢，接着它们也消失了，所有的东西都被抹平了。

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In warmer climates, snow is known to fall in areas over four thousand nine hundred meters above sea level.

VOA: special.2010.01.05

Some people skate ski; they speed across level snow.

VOA: special.2009.02.16

The authorities say the normal monthly level of snow fell in just 24 hours.

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In North Yorkshire, a driver escaped uninjured after his car was hit by a train when it skidded on snow and onto rail tracks at a level crossing near Selby.

BBC: Snow and ice leads to travel delays and school closures

He warned, however, that some low-level areas could see several centimetres of snow.

BBC: Northern Ireland on amber alert for snow disruption