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风滚草为什么会滚动? – 译学馆
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风滚草为什么会滚动?

Why Do Tumbleweeds Tumble? | Deep Look

感谢CuriosityStream支持PBS数码工作室
Thanks to CuriosityStream for supporting PBS Digital Studios.
它们长满尖刺
They’re prickly.
不满足于安定
Restless.
四处蔓延
Rambling.
但如果多数植物完全满足于生长在同一个地方
But if most plants are perfectly content to stay
为何风滚草要在畅通的路上撒欢
in one place, why does the tumbleweed hit the open road?
风滚草由细小的秧苗长成
Tumbleweeds start out as tiny seedlings.
它们在晚冬发芽
They sprout in late winter.
到了夏天 风滚草呈现出圆形模样
By summer the plant takes on its round shape.
它们开出的花朵依偎在多刺的叶子间
They grow flowers nestled between thorny leaves.
在每一朵花里 包含种子的果实都正在萌发
Inside each flower, a fruit with a singleseed develops.
这种果实不同于樱桃的美味
This fruit is different than something deliciouslike cherries.
和樱桃树一样幸运
Lucky for the cherry tree,
鸟儿会吞下果实去往远方 传播它的种子
a bird will carry the fruit away in its belly and disperse its seeds.
但风滚草也可以自己解决传种问题
But the tumbleweed takes matters into itsown hands.
秋天来临 它会变干 死亡
Come fall, the plant dries out and dies.
种子还留在那儿
The seeds are still in there.
风可以轻松地将死去的风滚草连根拔起
Gusts of wind easily break the dead tumbleweedfrom its roots.
看到它依附在哪儿了吗
See where it was attached?
看起来有点儿像骨头
It looks kind of like bones.
在风滚草底部有一种特殊的细胞膜
A special layer of cells at the base
让它完全断裂成为可能
of the plant makes this clean break possible.
然后骨架被切断
Then the skeleton is off,
随着风滚草的滚动 散落了成千上万个种子
shaking loose tens of thousands of seeds as it goes.
这说明
It turns out,
一些生物在它们死亡后可以更好的传播种子
some living things spread their seeds better when they ’ re dead.
如同西部牛仔 风滚草在开旷的草原上向前冲去
Like cowboys in a Western, tumbleweeds head out on the open range.
事实上它们并不是来自美国西部
But these icons of the American West actually come
所有的都来自东部的乌克兰
from the east, all the way from Ukraine.
它们在俄罗斯也是普通的野草
They’re a common weed in Russia too.
这也是它们被叫作俄罗斯蓟(猪毛草)的原因
That’s why they’re called Russian thistle.
它们本可以在十八世纪的亚麻籽中
They might have hitched a ride here
搭上顺风车
in the eighteen hundreds hidden among flax seeds.
现在它们可能会滚向高速公路 使你突然转弯
Nowdays they might amble onto the freewayand make you swerve.
或者缠住灌溉系统
Or get tangled up in your irrigation system.
它们甚至会滚到你的街区
They could even roll into your neighborhood,
堆积起来 变为火灾隐患
pile up and become a fire hazard.
但是风滚草不会留在绿草坪上
But a green lawn isn’t what the tumbleweedis looking for.
它不能与绿草这样的植物竞争
It can’t compete with plants like grass.
它们需要一个像洛基山北部荒废的洋葱田一样的地方
It needs a barren place like this abandoned onion field north of Los Angeles.
风滚草的每一次跳起都会让它的种子飞出来
With each bounce the tumbleweed sends itsseeds flying.
风滚草向外传播 得到充分的光照和空间
It spreads them out so they all get plenty of sunlight and space.
种子中螺旋形的胚胎只需要一点水便可发芽
The coiled-up embryo inside just needs a littlewater to sprout.
很快 新的风滚草就会独自长大
And soon enough, this plant will strike outon its own.
感谢CuriosityStream支持PBS数码工作室
Thank you to CuriosityStream for supportingPBS Digital Studios.
CuriosityStream是一种订阅流媒体服务 提供纪录片和非虚构类节目
CuriosityStream is a subscription streamingservice that offers documentaries and nonfiction
还有来自世界上最优秀的电影制作人 包括独家原创
titles from some of the world’s best filmmakers,including exclusive originals.
想要了解更多关于美国西部的信息吗
Want to learn more about the American West?
看看他们“开拓美国边境”系列
Check out their series “Pioneering the AmericanFrontier.”
现在可以得到无限访问权
Get unlimited access today.
对于我们的读者
And for our audience,
如果你注册了CuriosityStream.com/DeepLook将会获得六十天的免费使用权
the first 60 days are free if you sign up at CuriosityStream.com/DeepLook
并且在注册过程中使用促销代码deeplook
and use the promo code deeplook during thesign-up process.
想要保持深度的视觉之旅吗?
Want to keep up with Deep Look’s journey?
点击下面的链接注册我们的实时通讯吧
Sign up for our newsletter by clicking thelink below.
点击订阅 你将不会错过每一集的精彩
And subscribe, so you don’t miss an episode.
风滚草不寻常的传播方式
Tumbleweeds have an unusual way of gettingaround.
在这里将会看到另一种
Here’s another one.
请观看《深度观察》中脉动黏液霉菌的一集
Watch Deep Look’s episode on pulsating slimemolds.
下次再见
See you next time!

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视频概述

风滚草的成长过程。风滚草为什么会滚动?

听录译者

收集自网络

翻译译者

桃夭

审核员

审核员 V

视频来源

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

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