sand

The children spent the whole afternoon building a giant castle out of wet sand.

(Chinese) 孩子们花了一整个下午用湿沙子盖了一座巨大的城堡。

The wind blew the desert sand into tall dunes that shifted every single day.

(Chinese) 风将沙漠的沙子吹成高高的沙丘，这些沙丘每天都在移动。

You need to sand the surface of the desk thoroughly before applying the new varnish.

(Chinese) 在涂新清漆之前，你需要彻底打磨桌子表面。

He used a power tool to sand the old floorboards until the original wood grain appeared.

(Chinese) 他使用电动工具打磨旧地板，直到露出原始的木纹。