Beavers may continue to build a dam over a long time, adding to it each year.
河狸可能长时间不断地修筑一条堤坝，每年都加大一些。
Habitat Conditions, Home Range and Burrow Distribution Pattern of Beavers in Xinjiang Autonomous Region
新疆河狸的栖居条件、家域及洞巢分布格局
Shapiro Have you ever heard of Bayou Beavers.
沙皮罗你听说过生长在河口的海狸吗？
And rapidly we started to realize that beavers can be something that a bobcat needs.
于是我们很快意识到海狸可能会是 山猫需要的东西。
But beavers do more than build their houses.
河狸还不仅仅会造窝。
The beavers build their home by using sticks and mud.
河狸用树枝和泥土修筑它们的家。
The beavers think as they build their dams and their houses.
河狸在修水坝或垒窝得时候也会动脑子。
Beavers often build dams to keep the water of the pond at a constant level.
河狸常常修筑堤坝，使水塘的水位保持不变。
Beavers have an aptitudefor building dams.
水獭有筑坝的习性。
I have spoken of the building instinct of beavers.
我已经谈过海狸的建筑本能。
The den of certain animals, such as the dome shaped structure built by beavers.
巢动物的巢穴，如海狸造的一种穹顶的巢
They manifested all the busyness of a pack of beavers.
他们目睹了一群海狸忙忙碌碌的样子。
I had a man once send me a chip of wood that showed the marks of a beavers teeth.
曾经有人送我一段木片, 上面有山狸的齿痕。
Beavers find enough nutritious twigs and branches to support new colonies.
河狸可以找到更多营养丰富的嫩枝和树杈来养活新的群体。
And it need beavers to create the wetlands, and maybe some other things.
它需要海狸创造湿地，或许还有其它的东西。
Beavers seem to know just how high to make a dam.
河狸似乎知道该把堤坝筑多高正好。
It is by this instinct that birds build their nests and beavers their dam and huts.
正是靠了这种本能鸟类才会筑巢，海狸才会筑堤造窝。
Beavers are famous for their skill in building dams across streams.
海狸以会在溪中筑水坝而闻名。
Beavers are noted for their skill in building dams across streams.
海狸因其会在水流中筑堤而闻名。
Stand density is the limiting factor of the beavers.
河谷林密度是新疆河狸的种群限制因子。
The beavers carry or drag the logs into the water and float them into place.
河狸把木料搬运或拖拉进水中，再漂浮到需要的地方。
Yoou may find some eager beavers in any organization.
在任何机构里，你总会发现一些对上司竭力讨好的人。
And beavers, like wolves, are ecosystem engineers.
海狸，和狼一样，都是生态系统工程师
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