1. 海狸筑水坝，鸟筑巢。Beavers build dams and birds make nests.来自互联网
2. 作为一个例子，让我们看看海狸的觅食行为。As an example, let's look at foraging behavior among beavers.来自互联网
3. 海狸把树皮剥下来吃，它们也用树枝来筑巢。Beavers peel off the bark to eat and they also use the branches for building their shelters.来自互联网
4. 去年秋天，一只海狸搬进了我家旁边的小溪里。Last fall a beaver moved into the small stream beside our house.来自互联网
5. 继续像海狸一样咀嚼，你最终会实现你的目标的。Keep chewing like the beaver, and you will achieve your goal in the end.来自互联网
6. 土狼杀死了公园里大部分的红狐，还赶走了所有的海狸。The coyotes killed a large percentage of the park's red foxes, and completely drove away the park's beavers.来自互联网
7. 没人会相信一只海狸能有意识地去权衡每个要素的利弊。No one believes a beaver consciously weighs the pros and cons of each of these elements.来自互联网
8. 海狸住在小溪和河流附近，它们用木头、树枝和泥巴堵住小溪和河流。Beavers live near streams and rivers and they block up the streams and rivers with like logs and sticks and mud.来自互联网
9. 如果像北美大部分地区一样夏季水位下降，那么海狸的小屋入口就会暴露出来。If water levels fall in summer, as they do in most of North America, then beavers' lodge entrances may be exposed.来自互联网
10. 如果夏季水位下降，就像在北美大部分地区所发生的那样，那么海狸居所入口可能会暴露。If water levels fall in summer, as they do in most of North America, then beavers lodge entrances may be exposed.来自互联网
11. 海狸被大量捕杀、过度捕杀，到19世纪它们几乎灭绝了，这意味着湿地和静水变得更少了。The beavers were hunted a lot, overhunted, they are almost extinct by the 1800s, that meant fewer wetlands, less standing water.来自互联网
12. 它是由长时间的约束形成的，都指向一个事实，就是对海狸来说最好的觅食策略不是产出最多食物或木材。It's been shaped by constraints over vast stretches of time, all of which comes down to the fact that the best foraging strategy for beavers isn't the one that yields the most food or wood.来自互联网
13. 等等，我明白你的意思了，但在我们讨论欧洲人的定居如何影响生态系统之前，告诉我，海狸生活在怎样的环境中？Wait, I see where you are heading with this, but before we go into how European settlement affected the ecosystem, tell me this—what kind of environment do beavers live in?来自互联网
14. 这些海狸知道如何建造水坝，而且在有需要的时候就会这么做，比如当它们在砍伐和消耗了附近所有的树木后被迫迁移的时候。These beavers do know how to build dams, and do so if the need arises, as may occur if they are forced to relocate after felling and consuming all nearby trees.来自互联网
15. 海狸鼠会严重破坏生态系统。Nutria will damage the ecosystem seriously.来自互联网
16. 海狸只将灰树用于筑巢。Beavers use ash trees only for construction.来自互联网
17. 海狸怎么样——水道中包含海狸的生态系统。How about beavers—ecosystems with beavers in waterways.来自互联网
18. 海狸鼠是濒危物种。Nutria are an endangered species.来自互联网
19. 在美国大陆，到处都有海狸，大约有2亿只海狸。There used to be beavers all over the place, something like 200 million beavers, just in the continental United States.来自互联网
20. 海狸鼠是由阿根廷的皮毛养殖者带来的，并被放归野外。Nutria were brought there from Argentina by fur farmers and let go into the wild.来自互联网
21. 他说，让人们相信海狸鼠的毛是绿色的并不容易，但他对此毫不怀疑。He says it's not easy to convince people that nutria fur is green, but he has no doubt about it.来自互联网
22. 生物学家EdmondMouton 负责路易斯安那州的海狸鼠控制项目。Biologist Edmond Mouton runs the nutria control program for Louisiana.来自互联网
23. 红狼以白尾鹿或者其他的一些小的哺乳动物为食，比如沼泽兔子、浣熊以及海狸鼠。The red wolf diet consists mainly of white-tailed deer and small mammals such as swamp rabbits, raccoons, and nutria.来自互联网
24. 在新奥尔良和布鲁克林举行的不同寻常的时装秀上，展示了海狸鼠的皮毛被制成的不同风格的衣服。Unusual fashion shows in New Orleans and Brooklyn have showcased nutria fur made into clothes in different styles.来自互联网
25. 印第安人愿用海狸毛皮交换武器。The Indians would barter beaver pelts for weapons.来自互联网
26. 再认可海狸的无辜和创造力。I concede the innocence and creativity of beavers.来自互联网
27. 捉海狸的时候伤到了背部。Hurt his back chasing a beaver.来自互联网
28. 不到一小时，一部分海狸回到岸上继续进食。Within an hour, some of the beavers returned to land to continue eating.来自互联网
29. 如果你还想要去调查海狸水坝，注意你的脚下！If you are going to investigate the beaver dam, watch your step! (the bears are not careful where they dump!)来自互联网
30. 《海狸》：你能原谅他吗？The Beaver: Can You Forgive Him?来自互联网