announcement
词根词缀：
announce v. 宣布；发表
an 加强 + nounc 讲，说 + e → 一再讲 → 宣布
announcement n. 通告
announce 宣布；发表 + ment 表结果 → 通告
annunciate v. 宣言；通报
an 加强 + nunci 讲，说 + ate 做，造成，使… → 强调地说 → 宣言
denounce v. 抨击
de 毁 + nounc 讲，说 + e → 说诋毁的话 → 抨击
denunciate v. 抨击
de 毁 + nunci 讲，说 + ate 做，造成，使… → 说诋毁的话 → 抨击
enunciate v. 清楚表达
e 出 + nunci 讲，说 + ate 做，造成，使… → 讲出来 → 清楚表达
pronounce v. 发音；宣告
pro 前 + nounc 讲，说 + e → 在〔人〕前讲话 → 宣告
pronunciation n. 发音
pronounce的名词
renounce v. 否认；抛弃
re 反 + nounc 讲，说 + e → 反过来说 → 否认
数据来源：新东方英语词汇速记大全
相关例句：
He has surprised his supporters and wrong-footed his opponents with his latest announcement.
他最新发布的声明让支持者大呼意外，令反对者方寸大乱。
Sir Robert made his announcement after talks with the President
在与总统会谈之后，罗伯特爵士发表了声明。
There has been no formal announcement by either government.
双方政府都未作正式通告。
Hundreds of people huddled around a single transistor radio listening to the announcement
数百人挤在一台晶体管收音机周围收听公告。
The announcement was made a short time ago
通告是不久前才宣布的。
The announcement was welcomed as a step in the right direction, but was widely seen as a token gesture
该公告被认为是向正确方向迈进的一步，因而受到欢迎，但也被普遍看作是一种象征性的姿态。