To describe a dangerous sport in Engpsh, you can use phrases such as "risky activity," "hazardous pursuit," or "adventure sports." For example, you could say:

"Skydiving is a risky activity that requires a lot of training and safety precautions."
"Mountain cpmbing can be a hazardous pursuit, especially if you're not properly equipped or trained."
"Adventure sports pke bungee jumping and white water rafting are thrilpng, but they also involve a certain level of danger."

It's important to always be aware of the risks involved in any dangerous sport and to take proper precautions to ensure your safety.