"it was a hotbed of vice"
以上来源于: WordNet
N-COUNT 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. (不良活动的)温床 [with supp, usu N 'of' n] [强调]
...a state now known worldwide as a hotbed of racial intolerance.
...一个现已举世皆知的、作为种族歧视温床的国家.
You see, there have been hotbeds of creativity throughout history.
你看，创意的温床始终存在于历史的长河。
Creative centres such as Hollywood and Silicon Valley are also hotbeds of payment-by-results.
类似于好莱坞和硅谷这样的创意中心同时不也是流行着“看成果付钱”吗？
Interestingly, two of the most earthquake-prone places in the world are also two of the world's hotbeds of robotics engineering.
巧合的是，世界上地震最为频繁的两个地区同时也是机器人工程学发展壮大的沃土。
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