B1 [ U ] a substance that consists of very small grains of rock, found on beaches and in deserts沙,沙子
More examples
The child was tracing patterns in the sand with a stick.
Baby Martha was wriggling her toes in the sand.
I shook the sand out of my towel.
I like to feel the sand between my toes.
By midday the sand was too hot to walk on.
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