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pumice
释义
pumice
浮岩
产生于酸性熔岩的火山岩。因凝固太快来不及排出气泡,形成孔穴,状如海绵。色淡,质轻,常浮于水面。
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camera,television
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camomile
Camorra
camouflage
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Campaign for Nuclear Disarmament
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Campania
Campanula
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camphor
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