严禁 (yán jìn): Strictly forbid (Verb) — Meaning & Stroke Order

According to international conventions, it is strictly forbidden to dump any form of industrial waste in the high seas.

In your school's dormitory, isn't it strictly forbidden to keep pets?

Loud talking is strictly prohibited in the library to avoid disturbing others' study.

Although the sign says climbing is strictly forbidden, there are always people who turn a blind eye to it.