a loose material consisting of grains of rock or coral
French writer known for works concerning women's rights and independence (1804-1876)
fortitude and determination
动词 sand:
rub with sandpaper
sand (storage) case的用法和样例:
例句
Sand box analog models have been proved to be powerful tools for demonstrating the structural styles of extensional fault systems. 砂箱模拟实验已被证明是研究盆地内部伸展断层系统的有效工具。