ADM-201 dump PMP dumps pdf SSCP exam materials CBAP exam sample questions

海狸如何建造水坝 – 译学馆
未登录,请登录后再发表信息
最新评论 (0)
播放视频

海狸如何建造水坝

How Beavers Build Dams | Leave it to Beavers | PBS

Beavers are vegetarians.
海狸是食草动物
They gnaw through bark to eat the sugary layer underneath.
它们咬破树皮 去吃里面含糖的那层
They’ve been gnawing through forests for 20 million years.
就这样 它们在森林中生活了两千万年
Felling trees with your teeth takes great strength, skill and patience.
用牙齿咬倒树木需要很大的力量 技巧以及耐心
One technique is to slice halfway through
一个技巧是咬断一半
and let the wind do the rest.
剩下的就交给风了
The beavers’ incisors are strengthened with iron,
海狸的门齿中含有铁成分 这使其门齿更坚固
which makes them orange.
这也是门牙呈橙色的原因
They grow continuously and even self-sharpen.
它们的门齿会一直生长 甚至会自己变锋利
The pond makes it easier to move around the heavy logs
在海狸在搬运沉重的木头建造水坝时
they need to build their dams.
利用池塘会使搬运工作轻松一些
Out of the water, it’s a struggle.
离开了水 搬起来就吃力多了
Stones help weigh down the base.
它们用石头压实坝基
The whole family works together, carefully interlocking the timber.
它们全家一起干活 小心地将树干连结起来
They dredge mud from the pond bottom to seal the dam.
它们从池底挖出淤泥封住大坝
Each pond traps several inches of sediment every year
所有池塘每年都会积累数英寸厚的沉积物
so there’s plenty of it.
所以淤泥多得很
the young act as apprentice builders, learning the tricks of the trade.
小海狸作为建造师学徒 在学习着其中的诀窍
The final results are impressive.
最终的成果令人赞叹不已
In the Rocky Mountains beaver dams slowly filter billions of tons of water.
在落基山脉 海狸建造的水坝慢慢地过滤了数十亿吨的水
The ponds build up soil and nutrients
而那些池塘则沉积了土壤和养分
and help prevent floods and droughts.
也有助于预防洪灾和干旱的发生
Leave it to Beavers Wednesday, May 14, 8/7c on PBS
《留给海狸》节目于5月14日8点/中部7点在PBS播出

发表评论

译制信息
视频概述

简单介绍海狸以及它们如何建造水坝

听录译者

收集自网络

翻译译者

XC8849

审核员

审核员_BY

视频来源

https://www.youtube.com/watch?v=yJjaQExOPPY

相关推荐