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。
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！
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。
They're in the little house on top of the dam just up the river with Mr And Mrs Beaver.
他们就在河上堤坝顶上那座小房子里——跟海狸先生、海狸太太在一起。
Mr Beaver led them across the dam and on to the right bank of the river and then along a very rough sort of path among the trees right down by the river-bank.
海狸先生带他们穿过堤坝，走到河的右岸，然后走到河岸下面树丛里一条崎岖不平的小路上。
Mr Beaver led them across the dam and on to the right bank of the river and then along a very rough sort of path among the trees right down by the river-bank.
海狸先生带他们穿过堤坝，走到河的右岸，然后走到河岸下面树丛里一条崎岖不平的小路上。
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