经济学人下载:一周要闻 中国70周年阅兵看点 特朗普遭弹劾 朝鲜同意恢复裁军谈判

On New Year's Eve he confided that he had suffered rather troubling chest pains
新年前夜，他诉说他胸口疼得相当厉害。 

2.presidential nomination 总统提名

He will race for the presidential nomination.
他将角逐总统候选人的提名。

3.presidential election 总统选举

A presidential election was scheduled for last December.
总统选举原计划在去年12月举行。

4.congressional election 国会选举

Congressional seats change hands every election cycle.
国会席位每个选举周期都会易手。