河狸沿河筑坝。
河狸筑的水坝减缓了河水的流速，尤其是在大雨之后。
The beavers' dams slow down the speed of the river, especially after heavy rain.
河狸以家庭为群，一起生活和工作。
河狸用树枝和泥土修筑它们的家。
河狸用它那尖锐的牙齿咬树皮。
它的尾巴看起来像河狸的尾巴。
我们以为河狸永远都不会啃完这棵树。
早期的开拓者也捕杀河狸，取它们的肉。
其他一些因素也有助于河狸的活跃生活。
河狸把树的一大块咬掉了。
河狸专门从事的那种建筑工作确实令人震惊。
The kind of construction work a beaver specializes in is truly amazing.
河狸常常修筑堤坝，使水塘的水位保持不变。
Beavers often build DAMS to keep the water of the pond at a constant level.
为了使巢更舒适，河狸用草或碎木铺在地面。
To make it more comfortable, a beaver carpets the floor with grass or shredded wood.
水坝是河狸筑的。
欧洲有一些河狸，但是，大部分河狸都在北美洲。
There are some beavers in Europe, but most are found in North America.
长期以来，人们捕猎美洲河狸，以获取它的绒毛皮。
The American beaver has long been hunted for its velvety fur.
冬天的时候，尽管河狸遇到了挫折，他也从未放弃。
And, even with the setbacks he faced over the winter, he never gave up.
河狸把木料搬运或拖拉进水中，再漂浮到需要的地方。
The beavers carry or drag the logs into the water and float them into place.
河狸是一种大啮齿目动物，以它们的技巧和精力而闻名。
Beavers are a large rodent noted for their skill and energy.
河狸的大脑结构并未显示出它们比其他啮齿动物更聪明。
The structure of the beaver 's brain gives no indication that the animal is any more intelligent than other rodents.
当河狸坐在它的后腿上，啃树木时，它用尾巴保持平衡。
When a beaver is perched on its hind legs gnawing at trees, it USES its tail to keep a balance.
河狸的大脑结构并未显示出它们比其他啮齿动物更聪明。
The structure of the beaver's brain gives no indication that the animal is any more intelligent than other rodents.
这就是我们所需的地图，可以用来预测找得到河狸的地点。
As if these were the maps that we would need to predict where you would find the beaver.
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。
Beavers find enough nutritious twigs and branches to support new colonies.
河狸一定要把家安在池塘，通常建在水中，但有时也在岸边。
The beaver insists on a pond for his house, usually building out in the water, but sometimes in the Banks.
加拿大出版的历史最悠久的一种杂志也是以河狸为杂志的名称。
游泳时，它用尾巴当桨，在水中拍打，向其他河狸提醒有险情。
When swimming, it USES its tail as a paddle and splashes it in the water to warn other beavers of danger.
她真是个'积极的河狸'，我敢保证她在咱们公司会很有作为的。
She's a real eager beaver and I'm sure she will do very well in this company.
类似的动物类似的或相关的啮齿动物，如水猪、河狸鼠和刺豚鼠。
Any of various similar or related rodents, such as the capybara, coypu, and agouti.
类似的动物类似的或相关的啮齿动物，如水猪、河狸鼠和刺豚鼠。
Any of various similar or related rodents, such as the capybara, coypu, and agouti.
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