In the Yangtze region, Ordovician paleogeographic conditions were favorable to the development of source, reservoir and seal rocks in petroleum systems.

扬子地区奥陶纪古地理条件有利于含油气系统生储盖层的发育。

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Life on the rocks is a barrel of laughs for this harbour seal who was spotted chortling as he took a relaxing break from swimming.

对这只斑海豹来说，岩石上的生活有一箩筐笑料。在它游完泳躺在石头上休息时，摄影师捕捉到它在咯咯大笑。

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Life on the rocks is a barrel of laughs for this harbour seal who was spotted chortling as he took a relaxing break from swimming.

对一只斑海豹来说，岩石上的生活有一箩筐笑料。这只斑海豹游完泳躺在一块石头上休息，被摄影师捕捉到它在咯咯大笑。

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And it is a spectacular one, encompassing UNESCO World Heritage sites, pirate coves, dinosaur fossils, surf beaches, seal-basked rocks and enough Cornish pasty parlours to sustain your hiking between them.

BBC: Walking Great Britain��s great coast