时间:2018-12-24 作者:英语课 分类:Scientific American(五)月


英语课

   The patato family island kills a million people in a mass imigration. The patatoes were destroyed by L. Calls by the water infested 1. Now we know exactly which steam of the water did the dirty work. Researchers analyzed 2 the dry patato leaves well over a century old from Ireland as well as y epic 3 North America. They were able to sequence the d of 11 different strands 4 of f and none to compare these oldest specimens 5 to 15 modern ones. The conclusion a strange c one  is responsible for the Iresh great famine. The work is in the general e-life. A strange code US one has previously 6 been adopted for the cold bread and two s are closedly related. E one held ways during the 19th century. But with the introduction of new kinds of potatoes in the 20th century, US one began to dominate. Similar work with other preserved plant specimens could help trace the evolutionary 7 history about the p and assist the on-going effort to keep our stable crops disease free.


  Thanks for the minute for Scientific American 60-second science. I’m Sophie Bushwake.

1 infested
adj.为患的,大批滋生的(常与with搭配)v.害虫、野兽大批出没于( infest的过去式和过去分词 );遍布于
  • The kitchen was infested with ants. 厨房里到处是蚂蚁。
  • The apartments were infested with rats and roaches. 公寓里面到处都是老鼠和蟑螂。
2 analyzed
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
3 epic
n.史诗,叙事诗;adj.史诗般的,壮丽的
  • I gave up my epic and wrote this little tale instead.我放弃了写叙事诗,而写了这个小故事。
  • They held a banquet of epic proportions.他们举行了盛大的宴会。
4 strands
n.(线、绳、金属线、毛发等的)股( strand的名词复数 );缕;海洋、湖或河的)岸;(观点、计划、故事等的)部份v.使滞留,使搁浅( strand的第三人称单数 )
  • Twist a length of rope from strands of hemp. 用几股麻搓成了一段绳子。 来自《简明英汉词典》
  • She laced strands into a braid. 她把几股线编织成一根穗带。 来自《简明英汉词典》
5 specimens
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人
  • Astronauts have brought back specimens of rock from the moon. 宇航员从月球带回了岩石标本。
  • The traveler brought back some specimens of the rocks from the mountains. 那位旅行者从山上带回了一些岩石标本。 来自《简明英汉词典》
6 previously
adv.以前,先前(地)
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
7 evolutionary
adj.进化的;演化的,演变的;[生]进化论的
  • Life has its own evolutionary process.生命有其自身的进化过程。
  • These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
学英语单词
acute thyroiditis
annuity due
asbestos slate
basket-handle arch
beach head
beach landing site
bearing frame
bicarbureted
boculle
booted and spurred
calorie-controlled
canonical elements
carnivourous
clerkage
clier
coated-particle (type) fuel element
congenital myxedema
congestion pricing
conservation relations
copresidents
cosmetic bag
cotarnine chloride
course and bearing indicator
cypraecassis rufa
deleting current input line
eatin' shit
Ekiti State
electric network reciprocity theorem
epiphenethicillin
equalitarian
explosion mechanics
extragalactic radio astronomy
faugh
first-harmonic resonance
free domicile
George, Lake
ginless
golyadkin
guest workers
gush out
have the corner on sth.
haw jelly
hithe
hives
horn gramophone
Huchard's disease
imbruements
immune polysaccharides
infective pleurisy
interspecies H transfer
kers
Kit-cat
leeson
mica board
misery memoir
momentary switch
nause
nisse
Northern Ireland
occupation stress management program
oleo-guaiacol
order-filling cost
oxhydryl
palaeozygopleurids
parasitica
parotitic paralyses
partial hepatectomy
photoplayer
plagiosaurid
positivist
provenience
quadrantal spherical triangle
radiation-hazard meter
reagan administrations
reflectance spectroscopy
sand olive
semireductive algebraic group
sharp-focus realism
signal format
single-end refuelling
sluggardish
sodcast
striking barrel arbor
syllibub
symmetrical circuit
terabecquerel
test frequency
thermoelectrical instrument
Thespis
threskiornis aethiopicas
trachiobronchitis
tracking spacing
Trepassey
type series
unilateral lesion
unplugger
usumacinta
verges on
vertical-variability map
Vitharr
Waiki'i
zero-point energies