Geochemistry of the Shaximiao Formation in a dinosaur fossil site, Guangyuan, Sichuan, and its implications for the source area and paleoweathering是什么意思_Geochemistry of the Shaximiao Formation in a dinosaur fossil site, Guangyuan, Sichuan, and its implications for the source area and paleoweathering在线翻译_英语_读音_用法_例句