There are also animal-built structures, such as anthills and beaver DAMS.

此外还有动物建造的结构，比如蚁冢和海狸水坝。

youdao

Often Beaver builds DAMS in rivers or streams to assist in moving the water into the forest or into underground waterways to allow life to thrive all around.

海狸常常在河流或溪流边构建水坝来协助水流向森林或流进地下水道以允许生命可在周围茂盛生长。

youdao

Just upstream is a small beaver dam, one of three? The first DAMS documented on the river in 50 years.

就在上游不远处，有个小型的海狸水坝，是50年来首次被记录到的三个水坝之一，拉马河的支流沼溪就有六个海狸水坝。

youdao

Three days later, the British and a band of Mohawk and Anishnaabe warriors ambushed American forces at the Battle of Beaver Dams.

WSJ: 1812 | Canadian War Museum | Four Ways to Look at a War | By Mark Yost