strong,坚固的，hold,堡垒。

1. The western-most 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。

3. 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。

4. Our army completely surrounded and corked up the enemy stronghold.

我军把敌人的堡垒完全包围并封锁起来.

5. We immediately barraged the enemy stronghold with a torrent of rifle fire.

我们立刻用密集的步枪火力攻击敌人据点.