painful menstruation that is caused by some specific disorder (as endometriosis)
双语例句
Dysmenorrhea can be divided into primary and secondary types. 一般可分为原发性和继发性痛经。
Primary dysmenorrhea is a common disorder with a high incidence in women, which affects quality of work and life, and attracts attention. 摘要原发性痛经是妇科常见病，因其发病率高及影响了人们的正常工作和日常生活而受到人们的关注。
