in public
in public — 慣用語
1. in a place or situation where other people are present and can see or hear what
公開；當眾
在別人看得到或聽得到的地方
in a place or situation where other people are present and can see or hear what you are doing, especially when contrasting this with being alone or in a private setting
Eri hates singing in public, even though she has a beautiful voice.
Eri 不喜歡在公開場合唱歌，即使她的歌聲很好聽。
contrast between private ability and public performance
The mayor admitted his mistake in public during the town hall meeting.
在市政廳會議上，市長公開承認了自己的錯誤。
common with verbs of admitting, confessing, or apologising
Some people behave very differently in public than they do at home with their families.
有些人在公開場合的行為和在家裡與家人相處時完全不一樣。
It was the first time the couple had been seen in public together since their wedding.
那是這對夫妻婚後首次一起公開露面。
Kabir is a quiet man who rarely raises his voice in public.
Kabir 是個安靜的人，很少在公開場合提高音量。
- publicly
adverb form often interchangeable, e.g. 'admitted publicly' vs 'admitted in public' — slightly more formal
- openly
adds the nuance of hiding nothing, not just visibility
- in front of others
more literal, often used for physical presence rather than broadcast
- in private
the direct opposite — away from others' view or hearing
- in secret
implies deliberate hiding rather than just privacy
用法筆記
Most often used to contrast behaviour or events in the presence of others with what happens in private — the phrase itself carries no grammatical restriction.