Slums are hotbeds of crime and disease.
貧民窟是滋生犯罪和疾病的溫床.
辭典例句
Loosely managed teams can become hotbeds of distraction—employees routinely complain that they can't get their work done because they are forced to spend too much time in meetings or compelled to work in noisy offices.
2017年6月四級真題（第三套）閱讀 Section B