A mood of optimism pervaded the gathering. 会上充满乐观的气氛。
A mood of defeat permeated the whole army. 失败的情绪感染了全军.
He had come, in a mood of solemn parental patronage, to look on. 他带着严肃的父辈保护人的神气过来看看。
Depression is generally a mood state characterized by a sense of inadequacy, a feeling of despondency, a decrease in activity or reactivity, pessimism, sadness and related symptoms. 抑郁，是情绪悲观、生存意志低沉的状态。抑郁的人对生活的趣味冷漠，而且处事的调适能力虚弱。