如果你觉得冬天很难熬，特别是在十二月和一月份，那么你可能患上了‘季节性情绪失调’，这是由于冬日里缺少阳光而引起的情绪低落。

If you find the winter months tough, particularly during December and January you may suffer from Seasonal Affective Disorder, which causes a low mood caused by the lack of light during winter.

youdao

记录表明在日光最少的十二月和一月，出席率下降，每日平均课程参加量减少，分数降低。

Records show that during December and January, the two months with the fewest hours of daylight, attendance rates fall, average daily class participation drops, and grades decline.

youdao

主要旅游季节在干热的十二月和一月，还有干燥而凉爽的六月到八月。

The main tourist season runs during the hot, dry months of December and January, and the cool, dry months of June through August.

youdao