first-class ore一级: one-level; Class A; senior g ...矿石: ore; mineral次级矿石: sub ore二级矿石: milling ore; second class ore; second-class ore分级矿石: sized ore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:一级矿石,即可在微信中查询翻译