irregular menstruation

例句：

1. 1.She was diagnosed with irregular menstruation.
   她被诊断出有不规则月经。
2. 2. The irregular menstruation caused her a lot of problems.
   她的不规则月经给她带来了很多问题。
3. 3.Women often experience irregular menstruation during their teenage years.
   女性在青春期经常经历不规则月经。