克罗地亚最深的洞穴中发现一种透明蜗牛-凯发k8官网

克罗地亚最深的洞穴中发现一种透明蜗牛

文章来源：未知文章作者：enread 发布时间：2013-09-11 03:39 字体： [ ]　

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scientists discovered a new species of a ¹（独特的） cave-dwelling ² in one of the 20 deepest cave systems in the world, lukina jama-trojama in croatia. the newly discovered species belongs to a genus of minute air-breathing land ³ that have lost visual ⁴ and are considered to be true eutroglobionts, or exclusive cave-dwellers. the study describing the new species was published in the open access journal ⁵ biology.

the new species zospeum tholussum is a miniature and fragile snail, with a beautifully shaped dome-like ⁶（透明的） shell. only one living ⁷ was found during the expedition around the galleries of the lukina jama-trojama cave system. the animal was found at the ⁸ depth of 980 m, in an unnamed ⁹ full of rocks and sand and a small stream running through it.

all known species from the cave-dwelling genus zospeum possess a limited ability to move. their preference of a muddy habitat and the fact that they are usually located near the drainage system of the cave, in a close ¹⁰ to running water, however suggest that these animals are not exactly immobile. scientists hypothesize that dispersal is achieved through passive transportation via water or larger mammals.

the lukina jama-trojama is the deepest cave system in croatia, extraordinary for its ¹¹ shape, long pits and great depth of -1392 m. from an ¹² point of view this cave system is extremely interesting for having three microclimatic layers: firstly entrance icy part with the temperature of about 1 °c, ¹³, middle part with the temperature up to 2 °c and bottom part with temperature till 4 °c. these unusual living conditions make the cave extremely interesting for scientist from a biodiversity point of view.

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收听单词发音

1
adj.古怪的，异常的；特殊的，特有的
参考例句：
he walks in a peculiar fashion.他走路的样子很奇特。 he looked at me with a very peculiar expression.他用一种很奇怪的表情看着我。

2
n.蜗牛
参考例句：
snail is a small plant-eating creature with a soft body.蜗牛是一种软体草食动物。 time moved at a snail's pace before the holidays.放假前的时间过得很慢。

3
n.蜗牛；迟钝的人；蜗牛( snail的名词复数 )
参考例句：
i think i'll try the snails for lunch—i'm feeling adventurous today. 我想我午餐要尝一下蜗牛——我今天很想冒险。来自《简明英汉词典》 most snails have shells on their backs. 大多数蜗牛背上有壳。来自《简明英汉词典》

4
n.方向，目标；熟悉，适应，情况介绍
参考例句：
children need some orientation when they go to school.小孩子上学时需要适应。 the traveller found his orientation with the aid of a good map.旅行者借助一幅好地图得知自己的方向。

5
adj.地下的，地表下的
参考例句：
london has 9 miles of such subterranean passages.伦敦像这样的地下通道有9英里长。 we wandered through subterranean passages.我们漫游地下通道。

6
adj.半透明的；透明的
参考例句：
the building is roofed entirely with translucent corrugated plastic.这座建筑完全用半透明瓦楞塑料封顶。 a small difference between them will render the composite translucent.微小的差别,也会使复合材料变成半透明。

7
n.样本，标本
参考例句：
you'll need tweezers to hold up the specimen.你要用镊子来夹这标本。 this specimen is richly variegated in colour.这件标本上有很多颜色。

8
adj.显著的，异常的，非凡的，值得注意的
参考例句：
she has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。 these cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。

9
n.房间，寝室；会议厅；议院；会所
参考例句：
for many,the dentist's surgery remains a torture chamber.对许多人来说，牙医的治疗室一直是间受刑室。 the chamber was ablaze with light.会议厅里灯火辉煌。

10
n.接近，邻近
参考例句：
marriages in proximity of blood are forbidden by the law.法律规定禁止近亲结婚。 their house is in close proximity to ours.他们的房子很接近我们的。

11
adj.垂直的，顶点的，纵向的；n.垂直物，垂直的位置
参考例句：
the northern side of the mountain is almost vertical.这座山的北坡几乎是垂直的。 vertical air motions are not measured by this system.垂直气流的运动不用这种系统来测量。

12
adj.生态的，生态学的
参考例句：
the region has been declared an ecological disaster zone.这个地区已经宣布为生态灾难区。 each animal has its ecological niche.每种动物都有自己的生态位.

13
adv.第二，其次
参考例句：
secondly,use your own head and present your point of view.第二，动脑筋提出自己的见解。 secondly it is necessary to define the applied load.其次，需要确定所作用的载荷。

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