on demand
成語所屬單字demand
on demand — 慣用語
1. This phrase means that something is available or done whenever a person asks for
1.慣用語
釋義
隨選；按需求
This phrase means that something is available or done whenever a person asks for it.
例句
The streaming service lets users watch movies on demand.
With this printer, you can print documents on demand from your phone.