She got depressed and began to let things slide.
她情绪低落, 一切都听之任之.
He gets cheerful and depressed by turns.
他的情绪高一阵低一阵。
A friend of his happened to be sitting in a railroad-coach next to a young man who was obviously depressed.
他的一个朋友碰巧在火车车厢里坐在一个无精打采的年轻人的身边。
