depression 
英 [dɪˈprɛʃən]  美 [diˈprɛʃən] 
n. 沮丧，消沉；不景气，萧条（期）；低气压；压低；降低，下沉

例句：
He showed no signs of depression over the result. 

对于这一结果，他没有显示出任何抑郁的迹象。

She tries to shrug off her depression about being 30 by having a party. 

她想借举办聚会来摆脱年届30带来的郁闷心情。

She was suffering from depression after a miscarriage. 

她流产后患了抑郁症。

The major side effects come from depression of normal bone-marrow function. 

主要的副作用来自正常骨髓功能的衰退。