1.responsibility n.责任；职责

It's my responsibility to lock the doors.
我负责锁门。

2.slump n.暴跌；低潮状态

Sales have slumped in the last month.
上月销售量骤降。

3.hysteria n.歇斯特里症；不正常的兴奋

The abnormal, spasmodic swallowing of air, especially as a symptom of hysteria.
吞气症异常的痉挛性吞气，特指歇斯底里的症状。

4.combine v.联合；使结合

Two parties will combine to defeat the third.
两党派将联合以击败第三党。

5.revenue n.税收；收入

National tax revenue grew by a large margin every year.
国家税收连年大幅度增长。