sad mood meaning in Chinese

悲伤心境
一片天

I noticed all our friends were in a sad mood
就这样，我发烧四天后才好。
Two days later , there was a letter from prudence , and for the next fortnight marguerite seemed to have done with her mysterious sad moods , for which she never stopped asking me to forgive her now that they had ceased
两天以后，普律当丝来了一封信，以后的两周里，玛格丽特已经不再那么莫名其妙地发愁了，而且还不断地要求我为这件事原谅她。
These findings are not surprising said sinclair since there has been a growing body of literature in the area of social psychology demonstrating that sad moods lead to more contemplation and often more thoughtful or accurate judgments
认为，不必少见多怪，社会心理学许多文献表明，忧郁悲伤的心情使人更多思考，从而作出更多理性和更精确的判断。