名词
中文翻译：洗过的沙
同义词：
['clean sand', 'washed gravel']
例句：
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1.The beach was covered in washed sand when the tide came in.
潮水来临时，沙滩上满是洗过的沙子。
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2.We used washed sand to build a sandcastle.
我们用洗过的沙子堆了一个沙堡。
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3. The beach was littered with washed sand from the storm.
暴风雨过后，海滩上到处都是洗过的沙子。