beaver

例句：

1. 1.The beavers were busy building dams in the river.
   水獭们正在忙着在河里筑坝。
2. 2. Beavers are known for their ability to create intricate designs in the wood they dig.
   水獭以它们在挖掘的木头上创造复杂图案的能力而闻名。
3. 3. The beavers' work on the dam was a great success.
   水獭们在大坝上的工作取得了巨大的成功。