premenstruum

例句：

1. 1. She was experiencing premenstrual syndrome, which made her feel extremely uncomfortable.
   她正在经历经前期综合症，这让她感到非常不舒服。
2. 2. During the premenstrual phase, women often experience mood swings and irritability.
   在经前期，女性经常情绪波动和易怒。
3. 3.Premenstrual symptoms can be challenging for some women, but they are usually temporary and resolve with time.
   经前期症状对一些女性来说可能是挑战性的，但通常都是暂时的，随着时间会有所缓解。