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
air-launched cruise missile
aminitrozole
arachidonoyl
arterial tree
atmoclast
atmospheric diffusion
attested translation
attrib.
building sunshine
camera optical technique
cancel character instruction
centrifugal-washer
character path
classical groups
colour video inset
copy winding
Cortisumman
cryptographers
data compatibility
Deder
depreciation accounting
deuterium-moderated reactor
devolvements
diesel set
difference potentiometer
druggetings
eartip
embolic abscess
energy flows
extended memory environment
fairlead with horizontal roller
fasciculi innominatus
file map table
film transmission
fleeting fault
friends of the library
gall
galvanisms
gamio
gliomyoma
go to the shops
godown risks
half an timber hitch
heredity disease
housing program
humping gradient section
hydrochloric acid burn
hypovitaminoses
i-scalded
indirect immunofluorescences
komarek
l.jj
Les Herbiers
lightweight ribbon microphone
liquid crystal filter
magnetic south pole
making law
massaroes
metaplanta
microdontism
monoparticle
mpeg-3
Myet
nonsinglets
oncofoetal
one's blood is up
Orangizing
orpah
payt., pay't
penis vacuums
plate electrophoresis
porctoplegia
power of attorney to manage property
presenile
pseudoreduced compressibility
quasiregular
residential block green belt
Rhododendron mariae
scavenging box fire
sebacil
silver periodate
software associative memory
speculative position
starch iodide reaction
straight-compound cycle
SU UMa star
São Francisco, R.
temperature-diffuse scattering
tetramylose
third level of packaging
trichosterigma phaenacanthae
trod down
tropical forest zone
Utkholokskiy, Mys
valve lever bushing
veorne
voyeuristically
wash-rooms
watch-keeping period
water injection valve
whole shooting match
zheijiang