本文首次提出局部格群这一新概念。
In this paper, we at first introduce a new concept.
youdao
这个扩展被称为格罗坦狄克群。
This extension is known as the Grothendieck group.
马克扎克伯格预计该网站的用户群深圳能达到1亿。
Mark Zuckerberg predicts the site's userbase might even reach one billion.
应用推荐
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