三九宝宝网宝宝百科宝宝知识

大象用脚倾听技术英语

11月02日 编辑 39baobao.com

[创造更适合我们班级孩子的“学讲”英语课]李涛涛 ],自从徐州市推进 学讲计划 以来,一直在努力探索 学讲 之路,在这个过程中,经历了很多困难和挫折,但也意外收获了许多。学讲 课堂重视的是学生自己真实的学习的发生,所以学...+阅读

大象用脚倾听

Elephants may be listening with their feet as well as with their ears, say researchers who are studying how well super-low frequency elephant song moves through the ground.

大象在用耳的同时,还能用脚倾听——研究大象超低频鸣叫地面传播的研究人员如是说。

For about 20 years it''s been known that African elephants sing out and respond to calls so low that they are beyond human hearing. Until now, however, no one was sure if the rumbling calls were also moving through the Earth as seismic wes, possibly helping elephants municate when there is too much noise above ground.

二十多年前科学家们就曾研究发现,非洲象会使用各种低频声音进行交谈,这些低频声音甚至连人的耳朵也无法捕捉到。然而,在此之前谁也不曾料到这种“交谈”会像地震波一样通过地表传播。当地面噪音过大时,大象们很有可能就是用这种方式进行交流。

"They are trying to prove the concept is possible," said elephant researcher Katy Payne of the Cornell University Bioacoustics Research Program, referring to a team of Stanford University researchers who he published a paper on seismic elephant infrasound calls in the current issue of Geophysical Research Letters.

《地球物理研究通讯》近期发表了斯坦福大学的一组研究人员关于大象的地震波次声传播的一篇论文。康奈尔大学生物声学研究项目的大象研究人员Katy Payne正根据这篇论文进行实验,她说:“我们在试图证明这个设想是可行的”。

"We he several experiments going on right now to try to determine whether elephants perceive seismic cues via bone through their toenails and foot bones to their middle ear bones, or through vibration-detecting cells in the bottom of the foot," said Stanford''s Caitlin O''Connell-Rodwell, now studying the matter in Namibia.

正在纳米比亚进行研究工作的斯坦福大学研究人员Caitlin O''Connell-Rodwell说:“我们目前正在进行数个实验,用以断定大象是否能通过趾甲、脚骨、中耳骨或者脚底的震动探测细胞来察觉到地震信号。”

What is clear from the Stanford team''s earlier work with trained African elephants is that under ideal conditions, elephant infrasound calls can make seismic wes that can trel almost a mile and a half (two kilometers).

在通过驯服的非洲象进行的较早的研究中,斯坦福大学研究小组已清楚:理想条件下,大象的次声吼叫能使震波传播两公里左右。

The seismic signals are identical to the elephant calls in the air, says O''Connell-Rodwell.

地震信号和大象在空气中的鸣叫是相同的,O''Connell-Rodwell说。

But are the elephants really picking up distant seismic calls through their feet?

但大象们真的通过脚接收了远端的地震信号吗?

"It seems evident from their behior," said O''Connell-Rodwell.

“从它们的动作来看,这是很明显的,”O''Connell-Rodwell说。

Telltale behiors that an elephant is listening to a call include standing very still and adjusting their ears, explained Payne.

Payne解释泄密的动作是:大象在倾听时,总是静静伫立,并且调整他们的耳朵。

But since infrasound in the air is known to trel much further then a mile and a half (two kilometers), it''s hard to be sure if elephants ever notice the seismic side of their calls or use them as a back up "line" on noisy days.

但因为次声在空气中传播的距离要远大于两公里,所以很难断定大象是否留意到了地震波的信息,还是只是在地表嘈杂的日子把它作为一条备份“专线”。

To sort that out, the Stanford team is now sending elephant calls through the ground only and watching the reactions of wild elephants to see if it catches their attention.

为了区分清楚,斯坦福的研究小组现在正通过只给大象发送地震波,然后通过观察野生动物的反映来判断他们是否留意到地震波传递的信息。

"We are now conducting seismic playback experiments in Etosha National Park, Namibia, that will tell us for sure if they detect the signals," said O''Connell-Rodwell.

O''Connell-Rodwell说:“我们目前在纳米比亚的Etosha国家公园进行地震波回放实验,很快就能确定它们是否察觉了信号。”

As for whether the ground can also get too noisy for seismic elephant songs, O''Connell-Rodwell says it''s possible. Generators, vehicles and airplanes all can make a lot of seismic noise and can easily drown out elephant calls entirely.

谈到地表是否会因为别的震波而影响了大象的声音传播,O''Connell-Rodwell说这是可能的。发电机、车辆、飞机都能制造大量的地震波,而且轻易就把大象的声音完全盖过。

以下为关联文档:

高三英语教研组工作计划5篇高三英语教研组工作计划5篇(一)一、指导思想以学校总体教学工作为依据,以提高教研质量和教学质量为目标,增强教师的学习意识、服务意识、教科研意识、质量意识、合作意识、...

2016年关于国庆节英语演讲稿带翻译2016年关于国庆节英语演讲稿带翻译篇1Dear teacher, dear students:Everybody is good! The title of my speech today is: the national flag fluttering.Inadvertently...

攀登英语学习实验学期进展汇报开学近两个月来,我校攀登英语的教学工作按照市、区及本校的教学工作计划进行。从本周开始,进行Unit 6的教学,现将这段时间来的工作汇报如下:一、实验基本信息列项主要内容具...

家长会英语老师发言稿五篇【家长会英语老师发言稿】范文一尊敬的各位家长:晚上好!今天,我很荣幸地在这里,作为你们孩子的英语老师,和你们共同探讨一下怎样帮助孩子学好英语,由于水平有限,不当之处,敬请批...

读《英语广场》有感作者:王姣姣 ] 偶然的一次机会看到了《英语广场》这本杂志,翻来看看里面的内容还是很不错的,于是到网上查阅的一些有关这本杂志的信息,它是一本创刊十几年的杂志英汉对照、难度...

儿童学习英语是越早越好吗语言是孩子思维的窗口,代表了孩子心理发育的水平,家长都非常关注孩子语言能力的发展,加上如今对外交往的日益增加,大家更加关注孩子英语的学习,例如,双语幼儿园、剑桥英语学校、阶...

尽量多的运用英语来提问学生,为学生创造一种良好的学这个星期主要是期中调研,这也是很好地检验自己教学的一种方法,我也在这次的调研中发现了的一些问题。首先,听力部分还有待加强。从这次的***中,可以看出学生在第二题,根据问句选...

我爱英语,我爱Courage我爱英语,我爱Courage! 济南市经五路幼儿园与外教课堂互动 今天早上,大一班的孩子们显得比往常活跃兴奋了许多,原来,他们的老朋友Courage要来到班里了!孩子们都焦急的等待着,热...

在生活中积累英语新的一个学期过了近一个月,小朋友渐渐适应了幼儿园有规律的学习生活。和第一个学期相比,他们更爱玩了,学习的欲望和能力也越来越强了。要说小朋友的学习和以前有什么不同,最大的...

推荐阅读
图文推荐