not allowed 禁止的；不准的 Photography is strictly forbidden in the museum. 博物馆内禁止摄影。 The conversation was in danger of wandering into forbidden territory (= topics that they were not allowed to talk about). 谈话很可能离题而涉及禁止讨论的领域。 It is not forbidden to dream of a better world. 梦想一个更好的世界还是允许的。
Oxford Collocations DictionaryForbidden is used with these nouns:- love
Idioms
forbidden fruit
a thing that is not allowed and that therefore seems very attractive 禁果（唯其禁止，故特别诱人） Well, you know what they say— forbidden fruit tastes sweetest. 嗯，你知道他们说什么——禁果味道最甜。