365天跟读包原文讲义115

1、原文Polar bear, a species threatened by global warFrom Britannica · 264 words · 3 minsPolar bear, also called white bear, sea bear, or ice bear, great whitenorthern bear (family Ursidae) found throughout the Arctic region. Thepolar bear travels long distances over vast desolate expanses, gen

2、erallyon drifting oceanic ice floes, searching for seals, its primary prey. Exceptfor one subspecies of grizzly bear, the polar bear is the largest and mostpowerful carnivore on land. It has no natural predators and knows nofear of humans, making it an extremely dangerous animal.Humans probably caus

3、e most polar bear deaths by hunting and bydestruction of problem animals near settlements. Polar bears have beenknown to kill people. The bears aunted especially by Inuit people fortheir hides, tendons, fat, and flesh. Although polar bear meat isconsumed by aboriginals, the liver is inedible and oft

4、en poisonousbecause of its high vitamin A content.At the turn of the 21st century, an estimated 20,000 to 25,000 polarbears existed in the wild. Because of continued global war, asubstal reduction in the coverage of Arctic summer sea iceprimehabitat for polar bearsis expected by the middle of the 21

5、st century.Ms developed by some scientists predict an increase in polar bearstarvation as a result of longer ice-seasons and a decline in matingsuccess, since sea-ice fragmentation could reduce encounter ratesbetween males and females. Mforecasts by the U.S. GeologicalSurvey suggest that habitat los

6、s may cause polar bear populations todecline by two-thirds by the year 2050. In May 2008 the U.S.government listed the polar bear as a threatened species.翻译Polar bear, a species threatened by global warFrom Britannica · 264 words · 3 minsPolar bear, also called white bear, sea bear, or ice

7、 bear, great whitenorthern bear (family Ursidae) found throughout the Arctic region. Thepolar bear travels long distances over vast desolate expanses, generallyon drifting oceanic ice floes, searching for seals, its primary prey. Exceptfor one subspecies of grizzly bear, the polar bear is the larges

8、t and mostpowerful carnivore on land. It has no natural predators and knows nofear of humans, making it an extremely dangerous animal.Humans probably cause most polar bear deaths by hunting and bydestruction of problem animals near settlements. Polar bears have beenknown to kill people. The bears au

9、nted especially by Inuit people fortheir hides, tendons, fat, and flesh. Although polar bear meat isconsumed by aboriginals, the liver is inedible and often poisonousbecause of its high vitamin A content.At the turn of the 21st century, an estimated 20,000 to 25,000 polarbears existed in the wild. B

10、ecause of continued global war, asubstal reduction in the coverage of Arctic summer sea iceprimehabitat for polar bearsis expected by the middle of the 21st century.Ms developed by some scientists predict an increase in polar bearstarvation as a result of longer ice-seasons and a decline in matingsu

11、ccess, since sea-ice fragmentation could reduce encounter ratesbetween males and females. Mforecasts by the U.S. GeologicalSurvey suggest that habitat loss may cause polar bear populations todecline by two-thirds by the year 2050. In May 2008 the U.S.government listed the polar bear as a threatened

12、species.北极熊，也叫白熊、海熊、或冰熊，是生活在整个北极地区的一种体型硕大的白熊()。北极熊要在广阔而荒凉的地区长途跋涉，通常是在漂浮的海洋浮冰上，寻找它的主要猎物海豹。除了灰熊的一个亚种，北极熊是最大、最强的食肉动物。它没有天敌，也不惧怕人类，是一种极其的动物。人类的狩猎，和对住所附近带来麻烦的北极熊的捕杀，可能是造成北极熊的主要。众所周知，北极熊会。为了得到北极熊的皮、腱、脂肪和肉，因纽特人尤其爱捕杀北极熊。虽然土著居民食用北极熊的肉，但由于其肝脏中的维生素 A，所以通常且不可食用。在 21 世纪之交，预估有 2 万到 2 万 5 千只北极熊生活在野外。由于全球气候持续变暖，预计到

13、 21 世纪中叶，北极熊栖息地北极海洋浮冰的覆盖范围，在夏季将大幅减少。一些科学家通过其开发的模型，海洋浮冰的断裂可能会降低雄性和雌性北极熊之间的相遇几率，进而，由于无冰季节的延长和交配率的下降，北极熊被的情况会增加。地质调查局（U.S. Geological Survey）的模型显示，到 2050 年，栖息地的丧失可能导致北极熊数量减少三分之二。2008 年 5 月，将北极熊列为濒危物种。讲义知识积累Polar bear, also called white bear, sea bear, or ice bear, great whitenorthern bear (family Ursid

14、ae) found throughout the Arctic region. Thepolar bear travels long distances over vast desolate expanses, generallyon drifting oceanic ice floes, searching for seals, its primary prey. Exceptfor one subspecies of grizzly bear, the polar bear is the largest and mostpowerful carnivore on land. It has

15、no natural predators and knows no fearof humans, making it an extremely dangerous animal.desolate /deslt/ adj.荒凉的释义：(of a place) empty and without people, making you feel sad orfrightened表达：quite desolate 相当荒凉的；desolate landscape 荒凉的景观相关：desolately adv.荒凉地；desolation n.荒芜例句：They were far from their

16、families, desolate and frightened.expanse /kspæns/ n.宽阔释义：a wide and open area of something, especially land or water搭配：expanse of表达：a vast expanse of blue sky 广阔的蓝天近义：openness；broadness相关：expand v.扩张；expansive adj.广阔的；expansion n.扩张例句：She stood looking out over the flat expanse of fields.drift

17、 /drft/ v.漂浮；缓缓移动释义：to move along smoothly and slowly in water or air近义：float辨析：float 侧重指因有液体或气体所支持而不下沉，可表动态或静态；drift 多指随风或顺水飘荡，表示动态。例句：Smoke drifted across the room.拓展：drift v.漂泊ice floe /as flo/ n.浮冰释义：a large area of ice, floating in the sea例句：In spring the ice floes break up.subspecies /sb's

18、piiz/ n.(动植物)亚种释义：A subspecies of a plant or animal is one of the types that a particularspecies is divided into.构词：sub-次等的，下面的；species 种类例句：Several other subspecies of gull are found in the region.grizzly bear /rzli ber/ n.灰熊释义：a large aggressive brown bear that lives in North America and partsof R

19、ussia例句：The California state flag depicts a grizzly bear.carnivore /krnvr/ n.食肉动物释义：any animal that eats meat相关：carnivorous adj.食肉的近义：predator例句：Sam is a strict carnivore, allowing his patients to eat only lean meat,poultry, eggs, and low-fat cheeses.predator /predtr/ n.捕食者释义：an animal that kills an

20、d eats other animals表达：the relationship between predator and prey 捕食者与猎物的相关：predatory adj.掠夺的；predation n.掠夺例句：Some animals have no natural predators.Humans probably cause most polar bear deaths by hunting and bydestruction of problem animals near settlements. Polar bears have beenknown to kill peop

21、le. The bears aunted especially by Inuit people fortheir hides, tendons, fat, and flesh. Although polar bear meat isconsumed by aboriginals, the liver is inedible and often poisonousbecause of its high vitamin A content.settlement /setlmnt/ n.住所释义：a place where people have come to live and make thei

22、r homes,especially where few or no people lived before表达：ent settlement 古旧的住所相关：settle v.安居；settler n.移居者；殖民者例句：The Romans established a settlement on the south shore.拓展：settlement n.协议；（庭外）和解hide /had/ n.兽皮释义：an animals skin, especially when it is bought or sold or used forleather表达：a black hide be

23、lt 黑皮腰带相关：hidden adj.隐藏的例句：The hide is tanned for leather.flesh /fle/ n.肉释义：the soft substance between the skin and bones of animal or humanbodies搭配：in the flesh 本人表达：the smell of rotting flesh 腐肉的气味近义：meat辨析：meat 是肉类的总称，指可食用的肉，但不鱼类的肉；flesh 主要指或动物身上的肌肉组织，是从生理角度着眼的，也指动物的肉食。相关：fleshy adj.肉的；fleshiness

24、 n.肥胖例句：The injury was only a flesh wound and would heal in ten days or so.aboriginal /æbrdnl/ n.土著人释义：relating to the original people, animals, etc. of a place and to aperiod of time before Europeans arrived表达：aboriginal tribe 土著部落；aboriginal culture 土著近义：indigenous people 土著居民例句：He remained f

25、ascinated by the Aboriginals' tales.inedible /nedbl/ adj.不能吃的释义：something that you cannot eat because it is ofpoor quality, orpoisonous构词：in-反义；edible 可以吃的近义：uneatable例句：These chemicals make the fruit inedible.poisonous /pzns/ adj.的释义：causing death or illness if swallowed or absorbed into the bo

26、dy表达：poisonous chemicals化学物质近义：toxic相关：poison n.；poisoner n.者例句：The leaves of certain trees are poisonous to cattle.At the turn of the 21st century, an estimated 20,000 to 25,000 polar bearsexisted in the wild. Because of continued global war, a substalreduction in the coverage of Arctic summer sea

27、iceprime habitat forpolar bearsis expected by the middle of the 21st century.substal /sbstænl/ adj.巨大的释义：large in amount, value or importance表达：a substal change 巨大的变化；substal savings积蓄近义：considerable；massive相关：substve adj.有实质的；substance n.物质例句：Their share of the software market is substal.prime

28、 /pram/ adj.主要的释义：main; most important表达：prime concern 头等大事近义：major；main相关：primary adj.主要的例句：The care of the environment is of prime importance.habitat /hæbtæt/ n.栖息地释义：the place where a particular type of animal or plant isnormallyfound表达：habitat destruction 栖息地破坏相关：habitation n.居住例句：The

29、panda's natural habitat is the bamboo forest.Because of continued global war, a substal reduction in thecoverage of Arctic summer sea iceprime habitat for polar bearsisexpected by the middle of the 21st century.前面 because of 接状语，句子的真正主语是 a substal reduction，破折号之后的语用于解释说明，作 sea ice 的同位语。再之后的 is e

30、xpected是本句的谓语，by the middle of the 21st century 则是时间状语。Ms developed by some scientists predict an increase in polar bearstarvation as a result of longer ice-seasons and a decline in matingsuccess, since sea-ice fragmentation could reduce encounter ratesbetween males and females. Mforecasts by the U.S. GeologicalSurvey suggest that habitat loss may cause polar bear populations todecline by two-thirds by the year 2050. In May 2008 the U.S. governmentlisted the polar bear as a threatened species.starvation /strven/ n.饥饿释义：the state of suffering and dea