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托福听力词汇解析:Biology讲座类

2017-04-02 10:24:00来源：网络

　　为了帮助大家高效备考托福听力部分，熟悉Biology讲座类托福听力词汇，新东方在线托福网为大家带来托福听力词汇解析:Biology讲座类一文，希望对大家托福备考有所帮助。更多精彩尽请关注新东方在线托福网!

　　acorn

　　橡子

　　Some years ago, some of my colleagues conducted an experiment in an oak forest involving three different species: white-footed mice, gypsy moths and oak trees.

　　exponentially

　　指数地，迅猛增长地

　　Under those circumstances, its population would increase exponentially, meaning it would increase at an ever-accelerating pace.

　　finite

　　有限的

　　But for most species, most of the time, resources are finite.

　　moth

　　飞蛾

　　Authorities say the mob of 'roos is endangering a species of local lizard and the threatened gold sun moth through overgrazing.

　　predator-prey relationships

　　捕食者与被捕食者

　　Biologists speculate that the mostly likely cause was a shift in Pacific Ocean currents, but food availability, changing river conditions andpredator-prey relationships could be affecting the fish

　　strip away

　　除去，揭掉

　　So the size of the gypsy moth population is controlled by the white-footed mice,which is a good thing because gypsy moth caterpillars are considered pests.

　　They strip away the leaves from the oak trees every ten years or so.

　　variables

　　变量

　　Relationships between animal species in a given ecosystem can get pretty complex. Because in addition to predator-prey relationships, there are othervariables that affect population size

　　以上就是新东方在线托福网为你带来的托福听力词汇解析:Biology讲座类，更多精彩敬请关注新东方在线托福网。

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