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Sandstone

['sæn(d)stəʊn] or ['sænd'ston]

解釋/意思:

(noun.) a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.).

整理:诺里斯--From WordNet

解釋/意思:

(n.) A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand.

哈利整理

例句/造句/用法:

整理:露丝

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