ultra-hazardous
adjective (also ultrahazardous) uk/ˌʌl.trəˈhæz.ə.dəs/ us/ˌʌl.trəˈhæz.ɚ.dəs/
极端危险的
(especially of chemicals or other substances) extremely dangerous
The court had to decide whether a laboratory that handles ultra-hazardous materials had a responsibility to the general public to make sure they are never intercepted.
Ammonium nitrate is an ultra-hazardous chemical that has been used in the making of homemade explosives. 硝酸铵是一种极其危险的化学品，已被用于制造自制炸药。
- More examples
- The law holds companies liable for ultrahazardous activities involving toxic chemicals that cause health risks to people living downwind.
- The chemical disaster significantly changed the way multinational companies handle ultra-hazardous activities.
- The presence of the combustible materials in the warehouse caused an ultra-hazardous environment for the firefighters.