公開宣告
這一支是核心本身：把訊息攤到檯面上，讓大家知道。
declare officially · verb · B1
To tell people about a plan, decision, or piece of news in an official, public way.
宣布
核心畫面
Picture someone in front of a crowd and saying out loud a piece of news that people didn't know yet — the whole point is to make it public and make it heard.
可以想成一個人站到眾人面前，把一則原本大家還不知道的消息，正式又清楚地講出來，讓所有人都聽見。重點在『公開』和『讓人…更多收起
可以想成一個人站到眾人面前，把一則原本大家還不知道的消息，正式又清楚地講出來，讓所有人都聽見。重點在『公開』和『讓人知道』這兩件事。From the word’s history
From Latin annuntiare 'to bring news to' (ad- 'to' + nuntiare 'report', from nuntius 'messenger', ultimately a root meaning 'to shout'). Picture a messenger carrying news to people and calling it out — exactly the core: making news heard.
來自拉丁文 annuntiare，字面是『把消息帶到』（ad-『到』＋ nuntiare『通報』，源自 nuntius『信使』，更古的字根有『喊出來』的意思）。可以想成古代信使把消息送到大家面前、大聲喊出——這正是核心：讓消息被聽見。
etymonline.com/word/announce
Two branches
對聽眾播報
一樣是『讓大家知道』，只是這裡的『大家』是一群現場或收聽的聽眾，訊息常靠設備或司儀傳達出去。
announce over a pa · verb · B1
To tell people information over a loudspeaker or microphone, especially at an airport or train station.
廣播（通知）
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
announceverb/əˈnaʊns/
- 1
To give public notice of, especially for the first time; to make known.
- Her [Queen Elizabeth’s] arrival was announced through the country by a peal of cannon from the ramparts.
- Soon after the arrival of Mrs. Campbell, dinner was announced by Abboye. He came into the drawing room resplendent in his gold-and-white turban. […] His cummerbund matched the turban in gold lines.
- 2
To pronounce; to declare by judicial sentence.
- Publish laws, announce / Or life or death.
- 3
To act as announcer for (an event, usually sports).
- Our coach has retired, but occasionally he still announces the games.
- 4
To act or work as an announcer.
- Our coach has retired, but occasionally he still announces.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。