在许多传统社会里，谈论性话题仍然是一个禁忌。

In many traditional societies, talking about sex remains a ___taboo.

在某些文化中，谈论死亡是一个禁忌话题。

In some cultures, talking about death is considered a ___taboo.

在某些文化中，公开讨论死亡仍然是一种禁忌。

In some cultures, openly discussing death is still one of the ___taboos.