premenstrual phase

• 经前期

premenstrual phase的用法和样例：

例句

1. The general symptoms of premenstrual and menstrual periods were collected.
   调查内容为经前期症状及行经期间的一般症状。
2. Such premenstrual tension as well as menstrual discomfort can often be alleviated by medication.
   这种经前期紧张症和月经期不适通常能够用药物缓解。