Erosion of the white cliffs along the south coast of England has always been a problem but it has become more serious in recent years.

英格兰南部沿海白色悬崖的侵蚀问题一直存在，但近年来变得更严重了。

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The white cliffs of Dover, for example, are white because they contain limestone, or calcium carbonate.

比如，多佛的白色峭壁之所以为白色就是因为含有石灰岩或碳酸钙。

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Jonathan Trappe flies over the white cliffs of Dover as he crosses the English Channel flying a cluster balloon.

乔纳森·特拉皮飞越多佛的白色悬崖，其时他驾集簇气球飞越英吉利海峡。

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It may take a while before we see bluebirds over the white cliffs of Dover.

FORBES: Pain On The Corner Of Wall And Main

He crashlanded in Northfall Meadow on the famous white cliffs of Dover 37 minutes later at 5.12am.

BBC: News | Europe | Flight re-enactment fails to reach beach

Think of the port and the white cliffs and you think of freedom and victory over tyranny.

BBC: Dover port privatisation rejected by government