1.announcement n.宣布，公告

　　【商务用语】station announcement 电台呼号

　　train announcement 列车到发通知

　　announcement of forthcoming books 新书预告

　　announcement of results 成绩公布

　　【例句】He waited for the announcement of the result of the competition with bated breath.

　　他屏息等待宣布竞赛结果。

　　2.annoyance n.烦恼，可厌之事

　　【商务英语】annoyance value 干扰值

　　3.annuity n.年金;养老金;年金享受权

　　【商务用语】life annuity 终身年金

　　limited annuity 定期年金

　　national annuity 国民年金

　　ordinary annuity 普通年金

　　4.annum n.年，岁

　　【商务用语】per annum 每年

　　5.antecedent n.先辈;前因 adj.先行的

　　【例句】No one knew the antecedents and consequences of the competition between the two companies.

　　谁也不知道那两个公司竞争的前因后果。