题目内容：

英语翻译
沙子是固体的一种
沙有粗有细
（2）沙是一粒一粒的
（3）沙是松散的
（4）沙不溶解于水.

优质解答

The sand is a kind of solid which has small and rough.
The sand is in small grains,they are loose and does not dissolve in water.