volcanic layer火山: volcano; burning mountain层: I storey; tier; stratum火山层控矿脉: volcanic layer-bound vein卢山层: lushan formation木山层: mushan formation下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:火山层，即可在微信中查询翻译
