[科学美国人60秒] SSS 2015-08-28_在线英语听力室

(单词翻译:双击或拖选)

This is Scientific American - 60 second Science. I'm Christopher Antaryata. Got a minute? We humans take medicine when we are sick. As due our primate¹ cousins, chimps², for example, snack on a bitter African shrub³ to combat intestinal⁴ worms. But the habit extends even to invertebrates⁵. Take fruit flies, which sip⁶ alcohol to ward⁷ off parasitic⁸ wasps⁹, or willias, which lie no nest with anti-fungal anti-bacteria tree sap. Now researchers in Finland report that ants there that have encountered pathogenic fungus¹⁰ appeared to fight the infection by eating foods high in free radicals¹¹. Those are molecules¹² with a talent for causing cell damage, in this case, to the cells of the fungus, as according to a study in the journal Evolution. The researchers collected some 400 wild ants, exposed some to the fungus and left the rest alone. Then they offered up a sort of aggie¹³ custered, either plane or laced with free radicals in the form of hydrogen peroxide. Uninfected ants didn’t want anything to do with radical-rich food, which makes sense. “Is that clear mean we don’t need pain-killers on a daily basis, or we don’t take anti- …” …

点击

收听单词发音

1 primate
n.灵长类（目）动物，首席主教；adj.首要的
参考例句：
14 percent of primate species are highly endangered.14%的灵长类物种处于高度濒危状态。 The woolly spider monkey is the largest primate in the Americas.绒毛蛛猴是美洲最大的灵长类动物。

2 chimps
（非洲）黑猩猩( chimp的名词复数 )
参考例句：
Chimps are too scarce, and too nearly human, to be routinely slaughtered for spare parts. 黑猩猩又太少，也太接近于人类，不可以作为人器官备用件说杀就杀。来自英汉非文学 - 生命科学 - 医学的第四次革命 And as nonprimates, they provoke fewer ethical and safety-related concerns than chimps or baboons. 而且作为非灵长类，就不会产生像用黑猩猩或狒狒那样的伦理和安全方面的顾虑。来自英汉非文学 - 生命科学 - 医学的第四次革命

3 shrub
n.灌木，灌木丛
参考例句：
There is a small evergreen shrub on the hillside.山腰上有一小块常绿灌木丛。 Moving a shrub is best done in early spring.移植灌木最好是在初春的时候。

4 intestinal
adj.肠的；肠壁；肠道细菌
参考例句：
A few other conditions are in high intestinal obstruction. 其它少数情况是高位肠梗阻。来自辞典例句 This complication has occasionally occurred following the use of intestinal antiseptics. 这种并发症偶而发生在使用肠道抗菌剂上。来自辞典例句

5 invertebrates
n.无脊椎动物( invertebrate的名词复数 )
参考例句：
Insects and worms are all invertebrates. 昆虫和蠕虫都是无脊椎动物。来自辞典例句 In the earthworm and many other invertebrates, these excretory structures are called nephridia. 在蚯蚓和许多其它无脊椎动物中，这些排泄结构称为肾管。来自辞典例句

6 sip
v.小口地喝，抿，呷；n.一小口的量
参考例句：
She took a sip of the cocktail.她啜饮一口鸡尾酒。 Elizabeth took a sip of the hot coffee.伊丽莎白呷了一口热咖啡。

7 ward
n.守卫，监护，病房，行政区，由监护人或法院保护的人（尤指儿童）；vt.守护，躲开
参考例句：
The hospital has a medical ward and a surgical ward.这家医院有内科病房和外科病房。 During the evening picnic,I'll carry a torch to ward off the bugs.傍晚野餐时，我要点根火把，抵挡蚊虫。

8 parasitic
adj.寄生的
参考例句：
Will global warming mean the spread of tropical parasitic diseases?全球变暖是否意味着热带寄生虫病会蔓延呢？ By definition,this way of life is parasitic.从其含义来说，这是种寄生虫的生活方式。

9 wasps
黄蜂( wasp的名词复数 )；胡蜂；易动怒的人；刻毒的人
参考例句：
There's a wasps' nest in that old tree. 那棵老树上有一个黄蜂巢。 We live in dread not only of unpleasant insects like spiders or wasps, but of quite harmless ones like moths. 我们不仅生活在对象蜘蛛或黄蜂这样的小虫的惧怕中，而且生活在对诸如飞蛾这样无害昆虫的惧怕中

10 fungus
n.真菌，真菌类植物
参考例句：
Mushrooms are a type of fungus.蘑菇是一种真菌。 This fungus can just be detected by the unaided eye.这种真菌只用肉眼就能检查出。

11 radicals
n.激进分子( radical的名词复数 )；根基；基本原理；[数学]根数
参考例句：
Some militant leaders want to merge with white radicals. 一些好斗的领导人要和白人中的激进派联合。来自《简明英汉词典》 The worry is that the radicals will grow more intransigent. 现在人们担忧激进分子会变得更加不妥协。来自辞典例句

12 molecules
分子( molecule的名词复数 )
参考例句：
The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。 Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。

13 aggie
n.农校，农科大学生
参考例句：
Maybe I will buy a Aggie ring next year when I have money.也许明年等我有了钱，我也会订一枚毕业生戒指吧。 The Aggie replied,"sir,I believe that would be giddy-up."这个大学生慢条斯理的说，“先生，我相信是昏死过去。”

在线英语听力室_免费在线英语听力学习网站

[科学美国人60秒] SSS 2015-08-28