聚合物改性混凝土或玻璃纤维增强混凝土一般用于合成岩石使用。
Polymer-modified concrete or glass-fiber-reinforced concrete are generally used for synthesizing rock.
合成岩石世界上最伟大存款一度集中在动物园，主题公园和偶尔的博物馆展览。
The world's great deposits of synthetic rock were once concentrated in zoos, theme parks and the occasional museum exhibit.
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