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超级大鲨鱼! – 译学馆
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超级大鲨鱼!

Super Sharks!

当你想到鲨鱼时
when you think of a shark
你会想到什么
what do you picture in your mind do you
你想到的是一个庞然大物冲出水面
think of a big thing sticking out of the
还是一排排尖利的牙齿
water or maybe a huge set of sharp teeth
鲨鱼是海洋里最为人所知的生物之一
sharks are some of the most famous
但是你知道
animals in the ocean but do you know
鲨鱼到底是什么样的么?
what makes a shark shark
首先你要知道所有的鲨鱼都是鱼类
well for one thing all sharks are fish
这可能不出你所料 因为
that might not surprise you since they
鲨鱼都水中生存 游弋 但是
live and swim in the water but sharks
鲨鱼是一类特殊的鱼
are a special kind of fish one of the
它的一样特征让其区别于
things that makes them different from
其他普通鱼类如金鱼 那就是
other fish like goldfish is that sharks
鲨鱼体内特殊的骨架
have a special skeleton our skeletons
比如我们人类的骨架是由骨头组成的
are made of bone and so are the
大部分普通鱼类的骨架也同样如此
skeletons of most kinds of fish but a
但鲨鱼的骨架就不同
shark skeleton isn’t made of bone it’s
鲨鱼的骨架是由软骨构成的
made of cartilage and you have cartilage
你的体内同样具有软骨
in your body to you can feel it right
你现在就可以用你的手指去揉动你的鼻尖
now touch the tip of your nose wiggling
去感受那种触感
around how’s it feel
当你折叠你的耳朵后也会有同样触感
what about your ear can you bend it
因为你的鼻尖和你的耳部
you’re sure can because the tip of your
并不都是由骨骼构成
nose and your ear aren’t filled with
而是内有软骨
bone they’re filled with cartilage
软骨的质量相比骨骼轻了许多
cartilage is a lot lighter than bone and
并且可以轻松地被折叠
it bends easily so having a skeleton
所以鲨鱼由软骨构成的骨架能够使其
made of this stuff help sharks swim
游得更远更快
further and faster than if their
较之于由骨头作为骨架的鱼类
skeletons were made of bone now let’s
还有一样非同寻常之处
look at another body part that sharks
鲨鱼的牙齿
are famous for their teeth have you ever
你经历过乳牙替换成恒牙的时期吗?
lost a baby tooth and then an adult
鲨鱼也同样如此
tooth grew in well sharks loser teeth
但他们一生都会不停地替换牙齿
all the time throughout their entire
鲨鱼新的牙齿会源源不断的长出来
lives and they just keep growing new
你会想:怎么可能呢?
ones how can they do that you and I just
人类口腔中只有一排牙齿
have one row of teeth in her mouth but
但鲨鱼的口中会有多排牙齿
sharks have a lot of rows of teeth on
无论在口腔上部还是下部 所以
the top and the bottom so when a shark
当一条鲨鱼的牙掉了的时候
loses a tooth another tooth that’s right
在其口腔内后面的牙齿会上来替补
behind it can just move on up to take
因为鲨鱼永远都会有新的牙齿
its place because they always have new
去替换旧的牙齿
teeth to replace the old ones some
有些鲨鱼的一生当中
sharks can lose thousands of teeth
会脱落上千颗牙
during their lives alright the next cool
鲨鱼更特别的是他的皮肤
thing about sharks their skin if you
如果你抚摸一条鲨鱼的表皮
could rub the skin of a shark you’d find
你会发现摸起来十分光滑
that it would feel smooth
但仅在你顺方向抚摸时 但是
If you rub your hand in one direction but
如果你逆方向抚摸
if you rub your hand the other way it would feel
你就会发现手感如同猫的舌头
rough like a cat’s tongue that’s because a
因为鲨鱼表面有层粗糙的鳞片
shark skin is covered in tough boney scales
鳞片看起来像小牙齿
that actually look a little like tiny
这些鳞片相互堆叠
teeth these little scales are stacked on
就像排列整齐的房瓦
top of each other like tiles on the roof
这种鳞片可以帮助鲨鱼
this helps sharks swim through the water
在水中游得更快也更悄无声息
quickly and quietly so those are some of
以上就是鲨鱼的主要特征
the things that all sharks have but
但是
there are over
世界上共有超过450种的鲨鱼
450 types of sharks in the world and that
这也意味着鲨鱼中也会有些许不同
means a lot of differences to take a
接下来这种鲨鱼叫做鲸鲨
look at this one it’s called a whale
鲸鲨是世界上体积最大的鲨鱼
shark and it’s the biggest shark there
也是体积最大的鱼类
is in fact is the largest fish in the
在这个世界上
whole world
鲸鲨甚至可以生长至校车的大小
whale sharks can grow to be as long as a
但是尽管鲸鲨十分庞大
school bus but even though they’re so
但他们的食物却是
big they eat tiny plants and super small
细小的浮游植物以及微小的浮游生物
animals called plankton that flow in the
但并不是所有的鲨鱼都这么大
water but not all sharks are as big as
有一些鲨鱼的体积也十分渺小
the whale shark some can also be tiny
比如迷你灯笼鲨
meet the dwarf lantern shark it’s so
它甚至和你的手掌一般大小
small it could fit in my hand this sharp
迷你灯笼鲨生活在不见天日的深海
lives in the deep ocean where there’s
所以他们长了双大眼睛
very little light so it has big eyes to
以便他们能在黑暗中游动
help see in the dark plus it has a
此外 迷你灯笼鲨还聪明地进化出
really neat feature
在其腹部,鳍部,尾部的特别的器官
it has special organs on its belly fins and
可以在暗中发光
tail that actually glow scientists think
科学家推断这可以帮助迷你灯笼鲨
this might help the lantern shark lure them
在黑暗中吸引并捕食猎物
pray for it to eat
当在比较亮的浅水区时
plus when it’s in shallower water where
这些能够发光的组织
there’s more light these glowing lights
使灯笼鲨更好的伪装起来 躲避捕食者
can help it blend in to avoid predators
最后要给大家介绍的是
finally I’d like you to meet a very
一种特别的鲨鱼:格陵兰睡鲨
special shark say hello to the Greenland shark
这种鲨鱼大部分时间
this big shark spends most of its
都在冰冷的海水中游来游去
time swimming in very cold water hanging
在海床上寻找易捕获的食物
out near the sea floor looking for an
但近期科学家发现
easy snack but scientists have recently
格陵兰睡鲨一个惊人的属性
discovered something amazing about these
格陵兰睡鲨最长的寿命
animals Greenland sharks can live to be
可以达到400岁
up to 400 years old
在世界上所有的脊椎动物中
of all the animals in the world with
格陵兰睡鲨是我们已知的
backbones known as vertebrates Greenland
寿命最长的脊椎动物
sharks live the longest at least that we
但到目前为止科学家们
know what scientists are still
还在考察发掘更多世界上鲨鱼的种类
discovering new kinds of sharks all the
谁知道世界上是不是还有
time so who knows what kind of super
不为人知的超级鲨鱼
sharks are still out there waiting to be
等着被我们发现
found
你最喜欢哪种动物?
what’s your favorite animal do you want
你想知道关于他更多的知识吗?
to learn more about it just ask a
找一个大人帮你在下方留言评论
grown-up to help you and leave a comment
或者可以给我们发邮件
below or send us an email to kids at the
我们很高兴也期待
size of dot-com we’re excited to hear
你的来信
from you
我们还有一件令人激动的事
oh and we’re also really excited because
我们要做出一些改变啦
we’re making some changes to the fort so
敬请期待
stay tuned and we’ll share a few
我们将会在下周送给你一个惊喜
surprises with you in the upcoming weeks
感谢收看 下周再会
thanks we will see you next time. Here at the fort

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视频概述

介绍鲨鱼的主要特征,同时介绍了三种世界上特别的鲨鱼

听录译者

收集自网络

翻译译者

daisyhow

审核员

风吹桃

视频来源

https://www.youtube.com/watch?v=ZFk0xhqT5fQ

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