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美国科学60秒 SSS 2013-02-01

时间:2013-07-23 03:08:56

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(单词翻译)

   Beneath its adorable exterior1 is your cat hiding the heart of killer2.Researchers now estimated that each year domestic cats kill billions of birds and mammals in the United States alone.The report is in Nature Communications.We already knew that domestic cats can wreak3 havoc4 on islands causing 14 percent species extinctions and ranking as one of the worlds 100 worst invasive species.But now scientists have reviewed previous study to find just how much damage cats do on the mainland.Cats kill some 1.4 to 3.7 billion birds and 6.9 to 20.7 billion small mammals in the US each year.This numbers mean that felids may be the biggest human related cause of death for American birds and mammals.And cats had prong need of species which can cause major ecosystem5 damage.The worse feline6 killer and those without owners and reducing feral cat populations is a ongoing7 problem.But you can still reduce the impact of domestic cats by keeping your pet indoors.Thus leaving the neighborhood a little less red in tooth and claw.


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1 exterior LlYyr     
adj.外部的,外在的;表面的
参考例句:
  • The seed has a hard exterior covering.这种子外壳很硬。
  • We are painting the exterior wall of the house.我们正在给房子的外墙涂漆。
2 killer rpLziK     
n.杀人者,杀人犯,杀手,屠杀者
参考例句:
  • Heart attacks have become Britain's No.1 killer disease.心脏病已成为英国的头号致命疾病。
  • The bulk of the evidence points to him as her killer.大量证据证明是他杀死她的。
3 wreak RfYwC     
v.发泄;报复
参考例句:
  • She had a burning desire to wreak revenge.她复仇心切。
  • Timid people always wreak their peevishness on the gentle.怯懦的人总是把满腹牢骚向温和的人发泄。
4 havoc 9eyxY     
n.大破坏,浩劫,大混乱,大杂乱
参考例句:
  • The earthquake wreaked havoc on the city.地震对这个城市造成了大破坏。
  • This concentration of airborne firepower wrought havoc with the enemy forces.这次机载火力的集中攻击给敌军造成很大破坏。
5 ecosystem Wq4xz     
n.生态系统
参考例句:
  • This destroyed the ecosystem of the island.这样破坏了岛上的生态系统。
  • We all have an interest in maintaining the integrity of the ecosystem.维持生态系统的完整是我们共同的利益。
6 feline nkdxi     
adj.猫科的
参考例句:
  • As a result,humans have learned to respect feline independence.结果是人们已经学会尊重猫的独立性。
  • The awakening was almost feline in its stealthiness.这种醒觉,简直和猫的脚步一样地轻悄。
7 ongoing 6RvzT     
adj.进行中的,前进的
参考例句:
  • The problem is ongoing.这个问题尚未解决。
  • The issues raised in the report relate directly to Age Concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。

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