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【趣谈英语】蝉大部分时间都在地下-Cicadas Spend Most of Their Lives Underground

时间:2016-02-22 05:46来源:互联网 提供网友:yajing   字体: [ ]
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    (单词翻译:双击或拖选)
Pre-Listening Vocabulary
 
fascinate: to cause great interest
mature: to grow
periodical: reoccurring at specific times
droves: large numbers
brood: a group of living things that are hatched or born at the same time
emerge: to come out; to appear
overlap1: to occupy the same space or time
schedule around: to plan the date or time of something at a different date or time than something else (to avoid overlap)

Cicadas Spend Most of Their Lives Underground
Cicadas are insects that fascinate bug2 lovers. The word cicada comes from a Latin word meaning “tree cricket”. The periodical cicadas in the US are the most fascinating. They have 13 or 17-year cycles. This means they spend 13 or 17 years maturing underground before emerging in droves to mate. Despite their long lives, these periodical cicadas only spend a few weeks as adults. They die shortly after mating, and the life cycle begins again. Some years no periodical cicadas emerge, while other years there are overlapping3 broods. Special charts called “brood maps” tell bug lovers exactly when and where the massive broods will emerge. Male cicadas make a loud humming sound to attract a mate. Even though cicadas don’t bite or sting, many people consider these large bugs4 to be pests. Some couples even use brood maps to schedule their outdoor weddings around mating season. Around the world, many other types of cicadas emerge annually5 in the summer. They have 2-5 year life cycles and don’t all emerge at once.

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1 overlap tKixw     
v.重叠,与…交叠;n.重叠
参考例句:
  • The overlap between the jacket and the trousers is not good.夹克和裤子重叠的部分不好看。
  • Tiles overlap each other.屋瓦相互叠盖。
2 bug 5skzf     
n.虫子;故障;窃听器;vt.纠缠;装窃听器
参考例句:
  • There is a bug in the system.系统出了故障。
  • The bird caught a bug on the fly.那鸟在飞行中捉住了一只昆虫。
3 overlapping Gmqz4t     
adj./n.交迭(的)
参考例句:
  • There is no overlapping question between the two courses. 这两门课程之间不存在重叠的问题。
  • A trimetrogon strip is composed of three rows of overlapping. 三镜头摄影航线为三排重迭的象片所组成。
4 bugs e3255bae220613022d67e26d2e4fa689     
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
参考例句:
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
5 annually VzYzNO     
adv.一年一次,每年
参考例句:
  • Many migratory birds visit this lake annually.许多候鸟每年到这个湖上作短期逗留。
  • They celebrate their wedding anniversary annually.他们每年庆祝一番结婚纪念日。
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