Females who are plagued with irregular or no menstrual cycles or who hae problems becoming pregnant may hae what is known as Polycystic Oarian Syndrome (PCOS).

• 在我们国家“驴”这个词不罕见，但是对某些妇女来说怀孕生孩子很容易，对另外一些虽有女人特征，生孩子却不可能。