rolled-up pebble是什么意思，rolled-up pebble的翻译，rolled-up pebble音标、读音、用法和例句

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rolled-up pebble是什么意思，rolled-up pebble的翻译，rolled-up pebble音标、读音、用法和例句_菜篮子兴趣思朗文词典

rolled-up pebble

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专业释义

地球科学