hotbeds
n. (壞事、暴力等的)溫床( hotbed的名詞複數 )
If you say that somewhere is a hotbed of an undesirable activity, you are emphasizing that a lot of the activity is going on there or being started there.
...a state now known worldwide as a hotbed of racial intolerance.
舉世皆知現在是滋生種族褊狹的溫床的國家
Slums are hotbeds of crime and disease.
貧民窟是滋生犯罪和疾病的溫床.