on no condition
成語所屬單字condition
on no condition — 慣用語
1. not for any reason; never — used to strongly forbid something.
1.慣用語
釋義
絕不；在任何情況下都不
not for any reason; never — used to strongly forbid something.
例句
On no condition should you open the laboratory door while the experiment is running.
The librarian told the children that on no condition were they to eat inside the reading room.