an area, especially in a city, which is dangerous for people to enter, or that the police or army do not enter, often because it is controlled by a violent group 禁区（常因被暴力团伙控制） Some clubs are no-go areas for people over 30. 对于 30 岁以上的人来说，有些俱乐部是禁区。 🔊🔊 - (figurative)
This subject is definitely a no-go area (= we must not discuss it). 这个话题绝对禁止谈论。 🔊🔊