den

1. N-COUNT A den is the home of certain types of wild animals such as lions or foxes. 兽窝

2. N-COUNT Your den is a quiet room in your house where you can go to study, work, or relax without being disturbed. (学习、工作或放松的) 私室[美国英语]

The silver-haired retiree sits in his den surrounded by photos of sailing boats. 这位银发退休者坐在他的四壁挂满了航船照片的私室里。

3. N-COUNT A den is a secret place where people meet, usually for a dishonest purpose. 进行秘密活动的场所

I could provide you with the addresses of at least three illegal drinking dens. 我能向你提供至少3个秘密非法酒馆的地址。

4. N-COUNT If you describe a place as a den of a particular type of bad or illegal behaviour, you mean that a lot of that type of behaviour goes on there. (干坏事或违法活动的) 聚集地

...this den of iniquity called New York City. …这个称作纽约市的罪恶之地。