open-flame tunnel kiln是什么意思，open-flame tunnel kiln的翻译，open-flame tunnel kiln音标、读音、用法和例句_开心英文字典

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open-flame tunnel kiln是什么意思，open-flame tunnel kiln的翻译，open-flame tunnel kiln音标、读音、用法和例句_开心英文字典_柠咚词