1、Sum of any finitely many nil left ideals of A is also a nil left ideal of A.
的任意有限多個(gè)詣零左理想之和仍為A的詣零左理想；

2、there are finitely many solutions to this problem.
有有限多個(gè)解決這個(gè)問題的方法。

3、In this paper, we define and study GR rings and finitely generated projective modules over them.
本文定義并研究了廣義rigid環(huán)，并討論了環(huán)上有限生成投射模的性質(zhì)。