Lots of river stone. Local materials.

有很多河里的石头，是本地材料。

youdao

The Yangtze River Stone can be classified to a lot of types, such as landscape stone, embossment stone, shape stone, colorful stone, texture stone, etc.

长江奇石出现在长江流域，比如四川的宜宾和泸州。长江奇石以画面为主，有浮雕石，造型石，色彩石和纹理石。

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Because the stone cage net is used to control and guide the river and flood way of canal bed, slope revetment and other effects, so called river stone cage net.

因为石笼网首要用于操控和引导河流及洪水，途径运河河床，护岸护坡等效果，因此多被称为河道石笼网。

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Architect Edward Durrell Stone designed a simple white building that overlooks the Potomac River.

VOA: special.2010.10.29

Remnants of its 74 stone locks, as well as brick aqueducts that brought it water from the river,remain.

VOA: standard.2010.04.29

The pueblo of grass roofed buildings, round river-stone plazas and pre-Colombian magic is off limits to camera-clad foreigners.

BBC: Colombia��s spiritual centre

Meandering in a wilderness of boulders, the river was stone-coloured.

BBC: Following the Silk Road to the end of China

Researchers are assessing the riverbed in the deep Anchor Stone channel, down river from Dittisham.

BBC: Research into River Dart's tidal power potential