nonmetallic ore-deposit是什么意思，nonmetallic ore-deposit的翻译，nonmetallic ore-deposit音标、读音、用法和例句_开心英文字典

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nonmetallic ore-deposit是什么意思，nonmetallic ore-deposit的翻译，nonmetallic ore-deposit音标、读音、用法和例句_开心英文字典_柠咚词