每日口說挑戰 每到冬天總是很鬱卒？看看你是否得了「冬季憂鬱症」！ (6 Signs You Have Seasonal Affective Disorder (SAD))

今日挑戰句子

Seasonal Affective Disorder is caused by the changes in our circadian rhythms, melatonin, and serotonin.

季節性抑鬱症是由於晝夜節律、褪黑激素及血清素的改變所引起的。