tap sand

例句：

1. 1.The beach was littered with small rocks and smooth tap sand.
   海滩上散布着小石头和光滑的细沙。
2. 2.He carefully scooped up the tap sand and placed it in a bucket.
   他小心翼翼地把细沙装进桶里。
3. 3.The engineer used a shovel to remove the tap sand from the foundation.
   工程师用铲子从地基上挖走细沙。