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时间:2022-11-27 01:31:33 来源:网络整理 转载:www.lyvm.cn南宫创新内容哪家比较好城市网
关于蜘蛛的英文阅读:致命蜘蛛毒液可减轻中风带来的影响 A protein in spider venom may help protect the brain from injury after a stroke, according to res

  A protein in spider venom may help protect the brain from injury after a stroke, according to research.


  Scientists found a single dose of the protein Hi1a worked on lab rats. They said it showed "great promise as a future stroke treatment" but had not yet been tested in human trials.


  The Stroke Association said the research was at its early stages but it would "welcome any treatment that has the potential to reduce the damage caused by stroke".


  The researchers, from the University of Queensland and Monash University, travelled to Fraser Island in Australia to hunt for and capture three potentially deadly Australian funnel web spiders.


  They then took the spiders back to their laboratory "for milking". This involved coaxing the spider to release its venom, which can then be sucked up using pipettes.


  The scientists honed in on a protein in the venom and recreated a version of it in their lab. They then injected this Hi1a into the lab rats.


  They found that the protein blocked acid-sensing ion channels in the brain - something the researchers say are key drivers of brain damage after stroke.


  Prof Glenn King, who led the research, said the protein showed "great promise as a future stroke treatment".


  "We believe that we have, for the first time, found a way to minimise the effects of brain damage after a stroke. Hi1a even provides some protection to the core brain region most affected by oxygen deprivation, which is generally considered unrecoverable due to the rapid cell death caused by stroke."


  The research was published in Proceedings of the National Academy of Sciences.



  You may have seen men setting nets in the sea, or in a river, to catch fish. Let me tell you about the little animals that are always setting nets in your house and in your garden in much the same way. These animals are called spiders, and they use their nets or webs to catch flies and other insects.

  你可能看到过有人在海面或河面上撒网捕鱼。现在, 我来跟你说一说, 有一种动物经常在你的家里、花园里结网捕食。这种动物叫做蜘蛛, 它们利用自己的网来捕食苍蝇与其他昆虫。

  The spider itself is not an insect. An insect has only six legs, while the spider has eight. The insect's body is plainly divided into three parts; but the spider has its body in two parts only, the head and the chest being united into one part, while the belly forms the other. Insects have four wings;spiders have no wings. Spiders, again, have no feelers in front of their heads, as insects have.

  蜘蛛并不属于昆虫, 因为昆虫只有六条腿, 但蜘蛛有八条;昆虫的身体很明显地分为三个部分, 但是蜘蛛则只有两个部分:它们的头部与胸部连接在一起, 腹部则构成另外一部分。昆虫长有四只翅膀;而蜘蛛没有翅膀。蜘蛛的头部也没有昆虫那样的触角。

  An insect lays an egg, which changes first into a grub or cater-pillar, then into a pupa or chrysalis, and lastly into an insect. The spider also lays eggs, but each egg produces a perfect little baby spider. The perfect insect never grows bigger;but the little spiders grow so fast for a time that they have to throw off their leathery skins, and grow larger ones every few weeks.

  昆虫产卵, 然后孵化为幼虫或毛虫, 再变成蛹并最终生长为昆虫。蜘蛛同样产卵, 但是每一颗卵都能够孵化出结构完整的小蜘蛛。昆虫成虫身体不会生长变大, 但是小蜘蛛的生长速度却快, 经过一段时间之后就要蜕皮, 每过几周时间身体就会长大一些。

  The web of the spider is made of silk. This silk is formed inside the spider's body as a gummy fluid. It is squeezed out of several holes at the end of the spider's body, and the moment it comes out into the air it hardens and forms a delicate thread. The spider twists several of these fine threads together to form one strong line.

  蜘蛛网由细丝构成, 这些细丝来自其体内的粘稠液体。蜘蛛通过身体末端的几个小孔将这些液体排出, 它们一遇到空气就会立刻凝固并形成细线。蜘蛛将这些细线缠绕在一起, 形成一条结实的绳索。

  Try to find a spider's web on a bush or on the grass in your garden, and look very closely at it. The spider makes the outside lines of the web first. Then it forms the lines which extend like the spokes of a wheel from the centre of the net to the edges. All these lines of the web are made of smooth elastic threads of silk.

  走到花园中, 试试看能不能在树丛或草地上找到一张蜘蛛网, 然后仔细观察。蜘蛛首先编织的就是外围的蛛丝, 然后从中间往边缘的方向搭建轮辐般的蛛丝。这些蛛网全部由极富弹性的柔顺丝线组成。

  Lastly, it starts from the centre of the web and fastens a slender line across the others, going round and round in a spiral. This spiral or cross thread is covered by the spider with thousands of tiny drops of a very sticky substance. Then the spider goes to one corner of the net and waits.

  最后, 蜘蛛从蛛网中心绕上一圈又一圈的细丝, 它们构成彼此交叉的横丝。蜘蛛又在这些螺旋或交叉横丝上涂抹了数以千计的非常粘稠的物质。然后, 它便躲在一个角落里, 耐心等待。

  Soon an insect—perhaps a common fly—rushes in its flight against the web, and is caught by the drops of sticky stuff. Out comes the spider, runs to the fly, and rolls a band of its gummy silk around it. Then the spider gives the fly a bite, to kill it, or carries it away to one corner of the web till it is wanted for food.

  很快, 有只昆虫——可能就是一只普通点的苍蝇——在飞行中撞上了这张蛛网, 然后便被粘稠物质抓个正着。这时, 蜘蛛就会爬出来, 扑向苍蝇, 用粘稠的细丝将其团团围住。然后, 蜘蛛就会在苍蝇身上咬上一口, 把它****或者把它搬运到蛛网的某个角落, 等到想吃的时候再慢慢品尝。

  The spider's jaws are grooved, and in its head are some tiny poison-bags. When the spider bites, some of the poison runs down the grooves, and so enters the body of the insect which is bitten. After this the insect is unable to move or to fly away.

  蜘蛛的牙齿长有沟槽, 头部则生有几个很小的毒囊。当蜘蛛咬下猎物时, 一部分毒液顺着凹槽流入猎物。这时候, 被咬的昆虫动不了也飞不走了。

  There are many spiders which in habits and appearance are quite different from the garden spider. Some of them have their nests in little holes in the ground, and make little trap-doors to close them. Others live under water, and carry down little bubbles of air to breathe in their homes.

  蜘蛛的种类很多, 它们的习性、外貌与我们在花园中见到的蜘蛛相差很大。有些蜘蛛在地下的洞中栖身, 在洞口造出一个既能遮挡地洞又能捕获猎物的活门。还有些蜘蛛生活在水中, 它们能够将小气泡带入水中, 用于在自己的巢穴中呼吸。


  By now, you may have heard about a study that came out a couple of weeks ago about spiders. The study got a lot of attention because coverage of the research often focused on the idea that spiders could eat every single person on the planet in a year and still find room for a lot of cows and elephants and such. In other words, spiders need a lot of meat. Fortunately, the food of choice for the overwhelming majority of spiders is other arthropods, mostly insects and another type of tiny critter called springtails.

  Anyway, the study—which never mentions spiders eating all the world's people—was done by Martin Nyffeler at the University of Basil in Switzerland and Klaus Birkhofer of Lund University and Germany's Brandenburg University of Technology.

  Places with plenty of spiders. Because most places are places with plenty of spiders. The write-up the April issue of the journal The Science of Nature concluded that the world's spider population weighs some 25 million tons. Now, your average spider only weighs an itty-bit, so if you do the calculation you get a total worldwide population of some eleventy gazillion spiders. More or less. But the 25 million tons of spiders is a real number, derived from other published studies, dating as far back as 1951.

  The researchers then estimated how much weight in food that much weight of spiders would need. And they also went through many other studies that had estimated how much spiders ate in particular habitats, ranging from tropical forests to farms. Once they crunched all those arthropods, the intrepid spider speculators reached their verdict: spiders snatch between 400 million and 800 million tons of meat annually.

  So if you see a spider—and there's almost certainly a bunch in your home right now—you could stomp it. Or you could gently put it outside. Or you could wish it bon appétit! And leave it to dine on the other stuff you probably want in your home even less.