Smoking is strictly forbidden in this area.

此区域严禁吸烟。

Access to the restricted section is forbidden without proper authorization.

未经适当授权，禁止进入限制区域。

The ancient texts had forbidden the use of such magic.

古代文献曾禁止使用此类魔法。

He was forbidden from entering the premises after the incident.

事件发生后，他被禁止进入该场所。