sand例句

The sand on the floor scrunched under our feet.
地板上的沙子在我们脚下嘎吱作响。

The sand martin is a brown bird with white underneath.
崖沙燕是一种褐羽白腹的鸟。

They all walked barefoot across the damp sand to the water's edge.
他们全都光着脚走过潮湿的沙地来到水边。

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