【英语时差8,16】为什么秃鹰不会食物中毒？（上）

Despite their ugly and morbid¹ reputation, vultures play a critical role in keeping ecosystems² healthy. These scavengers act as nature’s “clean up crew,” and prevent the spread of disease by consuming potentially infected carcasses. But how do vultures manage to eat diseased, rotting meat without getting sick? Their first line of defense³ is to avoid eating rotten meat. This may surprise you given the vulture’s reputation, but vultures prefer recently killed carcasses. They will happily chow down on two or three day old carrion⁴, but once it really starts to rot, they avoid it. A second defense is a remarkable⁵ resistance to most diseases. Vultures can usually eat carcasses infected with such deadly pathogens as botulism, anthrax, cholera⁶, and salmonella without getting sick.

1 morbid   

adj.病的；致病的；病态的；可怕的

参考例句：

• Some people have a morbid fascination with crime.一些人对犯罪有一种病态的痴迷。
• It's morbid to dwell on cemeteries and such like.不厌其烦地谈论墓地以及诸如此类的事是一种病态。

2 ecosystems   

n.生态系统( ecosystem的名词复数 )

参考例句：

• There are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
• Madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样，从雨林到半荒漠等不一而足。 来自辞典例句

3 defense   

n.防御，保卫；[pl.]防务工事；辩护，答辩

参考例句：

• The accused has the right to defense.被告人有权获得辩护。
• The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。

4 carrion   

n.腐肉

参考例句：

• A crow of bloodthirsty ants is attracted by the carrion.一群嗜血的蚂蚁被腐肉所吸引。
• Vultures usually feed on carrion or roadkill.兀鹫通常以腐肉和公路上的死伤动物为食。

5 remarkable   

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。

6 cholera   

n.霍乱

参考例句：

• The cholera outbreak has been contained.霍乱的发生已被控制住了。
• Cholera spread like wildfire through the camps.霍乱在营地里迅速传播。