Cancer is a taboo subject and people are frightened or embarrassed to talk openly about it.

癌症是个禁忌的话题，人们对公开谈论它感到害怕或尴尬。

《柯林斯英汉双解大词典》

It's a taboo subject. How the dead are betrayed by the living.

生者如何背叛死者，这是个禁忌话题。

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But in the case of film studies, that was also a taboo subject until recently.

不过电影研究，一直以来也无人问津，电影研究的热潮也就是最近几十年的事情。

youdao

But in the case of film studies, that was also a taboo subject until recently.

不过电影研究，一直以来也无人问津,电影研究的热潮也就是最近几十年的事情。

麻省理工公开课 - 电影哲学课程节选

Mr. Maaz said looted art was a taboo subject, never discussed officially in Communist East Germany.

WSJ: The Sistine Madonna | Old Masters Picture Gallery | The Madonna Above the Cherubs | By A.J. Goldmann

He questions why the idea of human nature has become a taboo subject, exploring "hot buttons" like violence, gender and aggression.

BBC: Aventis science prize 2003 - Pinker

During his last term of office, the issue of his retirement became a taboo subject among government officials, especially those belonging to his ruling Kanu party.

BBC: Moi's golden handshake