cob coalround coal圆: round; circular; spherical块煤: lump coal圆块: cob; nahlock块煤: [地质学] lump coal; coal; valengongite; torbanite; bitumenite; kerosine shale大圆块: loaf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:圆块煤,即可在微信中查询翻译