strongholds

英 [ˈstrɒŋhəʊldz]

美 [ˈstrɔŋˌhoʊldz]

n. 有广泛支持的地方; 势力强大的地方; 堡垒; 要塞; 据点; (某种动物的)主要栖息地
stronghold的复数

柯林斯词典

N-COUNT (持共同态度或信仰的人的)大本营，据点
If you say that a place or region is astronghold ofa particular attitude or belief, you mean that most people there share this attitude or belief.
1. The westernmost part of north Wales is a stronghold of Welsh-speakers...
  北威尔士最西部是说威尔士语人的聚居区。
2. The seat was a stronghold of the Labour party.
  这个选区是工党的大本营。
N-COUNT (某种动物的)主要栖息地
If you say that a place is astrongholdof a particular type of animal, you mean that more of that type of animal live there than in other places.
1. Shetland is the last stronghold of otters in the British Isles.
  设得兰群岛是水獭在不列颠群岛上最后的栖息地。