单词：quaternary quantic
四次式
单词：quaternary quantic 相关文章
Because the British were the most active in the early years, British names are predominant in the geological lexicon. Devonian is of course from the English county of Devon. Cambrian comes from the Roman name for Wales, while Ordovician and Silurian
发表于:2019-01-29 / 阅读(141) / 评论(0)
万物简史
万物简史