1 sentence

1. 每月一次月经不适的必然性可能非常令人沮丧。

   měi​yuè yī​cì yuè​jīng bù​shì de bì​rán​xìng kě​néng fēi​cháng lìng​rén jǔ​sàng.

   The inevitability of menstrual discomfort once every month can be very frustrating.

   Source: CCMatrix