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
Aboriginals
accumulated earning tax
amors
anepithymia
antirecipocal circuit
apiose
army list, Army List
Autocompetition
batten ends
Bender Cassim
blows you off
boiling holes
cancerettes
cardiac dwarf
chained connection
chiang kan
choupori
chuuch
cleaning fan
Clinton County
cognitive development theory
conoce
cranlan
devisacope
directorate of standards
dredge
drive key
farmans
fine cargo
fore-lying
frequency primary standard
general nature
give free transportation of
homeyer
horseway
idle labor
in-situ soil test
incalculably
inland distribution depot
instantaneous total closure
intracapsular ligaments
isonomia
jurisprudentially
kordax (greece)
Kornilow's reflex
lacrimatories
lid spring
low voltage commutator
Madarao-yama
ministerial standard
monolithic photodiode
multiple virtual storage
nanopaper
nar nar
non-foaming oil
nonbarotropic
NSHS
on-line refuelling
one-year file
out-Herods
overmodulate
Pandion haliaetus
played with fire
political life
polyaoxylin
Posadasis spheriforme
pot limit
potentises
precast prestressed concrete
prefocation
professional dancer
protactinium(iv) oxide
protoplasma
Qin dynasty
record level
ReLC
resonant wire drawing force meter
Rhodininae
roadway
sequential testing
shahjahan
spheroidal weathering
spline surface
stock adjustment demand function
strut rod
sun-2 workstation
superpetrosal
superselling
telephone dials
tiruchchendur (tiruchendur)
toll line
transfunding
unfutured
unhorsed
uniform circular motion
us wrote
volumetric concentration
well-closed containet
westerfield
wolfram lamp
zotepine
zymogen