quasi-regular left ideal

例句：

1. 1. The quasi-regular leftideal is a concept that has been studiedfor decades.
   准规则左理想是一个被研究了几十年的概念。
2. 2. In mathematics, the quasi-regular leftideal is used to describe the behavior ofcertain functions.
   在数学中，准规则左理想用于描述某些函数的行为。
3. 3. The quasi-regular left ideal isa useful tool for solving complex problems invarious fields.
   准规则左理想是解决各个领域复杂问题的有效工具。