when he’s, it’s, etc. at home
成語所屬單字home
when he’s, it’s, etc. at home — 慣用語
1. Used to emphasize a question about someone or something, often when you do not k
1.慣用語
釋義
到底是誰（什麼）
Used to emphasize a question about someone or something, often when you do not know them.
例句
Who is she when she's at home? I've never heard of her.
What is that gadget when it's at home?