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

If you are going to investigate the beaver dam, watch your step! (the bears are not careful where they dump!)

如果你还想要去调查海狸水坝，注意你的脚下！

youdao

And that was a problem for Johnny beaver, because without the aspens he couldn't dam the rivers and streams.

这对雄海狸来说可不是好事，因为没有了白杨树它们无法在河溪里筑坝。

youdao

She scrambles to the beaver dam and returns with an inch-long worm squirming on the tip of her finger.

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