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N-UNCOUNT
沙;沙子
Sand is a substance that looks like powder, and consists of extremely small pieces of stone. Some deserts and many beaches are made up of sand.
例句
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。
...grains of sand.
沙粒
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N-PLURAL
(海滨等的)沙滩
Sands are a large area of sand, for example a beach.
例句
...miles of golden sands.
绵延数英里的金色沙滩
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VERB
用砂纸磨光(或擦净)
If you sand a wood or metal surface, you rub sandpaper over it in order to make it smooth or clean.
例句
Sand the surface softly and carefully.
用砂纸仔细而轻柔地打磨表面。
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PHRASE
多变;动荡;曲折
If you refer to the shifting sands of a situation, you mean that it changes so often that it is difficult to deal with.
例句
He had been a rock in the shifting sands of her existence.
他一直是她曲折坎坷的生活中的主心骨。
...his shrewd tactical skills in the shifting sands of Arab politics.
他在阿拉伯风云变幻的政局中的高明谋略