glacial erratic boulder是什么意思，glacial erratic boulder的翻译，glacial erratic boulder音标、读音、用法和例句

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glacial erratic boulder是什么意思，glacial erratic boulder的翻译，glacial erratic boulder音标、读音、用法和例句_淳朴汉英词典

glacial erratic boulder

基本解释

专业释义

地球科学