时间:2018-12-24 作者:英语课 分类:2015年Scientific American(一)月


英语课

 This is scientific American 60 seconds science. I'm *, got a minute ?Genetically 1 engineered bacteria already proves some products are commercial interests or biometical importance such as insulin. And coaxing 2 the organism to do so can be done with a cleaner setup and produce fewer environmentally problematic by-products than other production methods. But the baceria approach is still limited to just a few products due to not efficient. Now, a research team at Harvard's Wyss institute for biologically inspired engineering says they've deleloped a system to get microbes to produce chemicals dramatically faster and more efficently. The technique uses Dr. william principles of multiple itrations what they call rounds of evolution. The study isn't the proceedings 3 of the national academy of sciences. The researchers introduced mutations in specific genes 4 related to their expression of the desired molecule 5. It then tweeted the bacteria so that genes for anti-biotic resistance only become active when the cells make some of softer product. When the anti-biotic present, cells died and do not produce enough of the product because those cells also do not have the life-saving resistance to the anti-biotics. The surviving cells however show promise. The system takes the cells through this evolutionary 6 cycle repeatedly eliminating and product bacteria each time. And as a result, microbes that sypathize the chemical interests with 30 times the output of current compound production systems and up to the 1,000 times faster. The researchers say their programe could work to a efficiently 7 produce a wide variety of useful compounds which might make vats 8 of modified bacteria tomorrow's leaders and commercial chemical manufacturing.  



1 genetically
adv.遗传上
  • All the bees in the colony are genetically related. 同一群体的蜜蜂都有亲缘关系。
  • Genetically modified foods have already arrived on American dinner tables. 经基因改造加工过的食物已端上了美国人的餐桌。 来自英汉非文学 - 生命科学 - 基因与食物
2 coaxing
v.哄,用好话劝说( coax的现在分词 );巧言骗取;哄劝,劝诱;“锻炼”效应
  • No amount of coaxing will make me change my mind. 任你费尽口舌也不会说服我改变主意。
  • It took a lot of coaxing before he agreed. 劝说了很久他才同意。 来自辞典例句
3 proceedings
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
4 genes
n.基因( gene的名词复数 )
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
5 molecule
n.分子,克分子
  • A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
  • This gives us the structural formula of the molecule.这种方式给出了分子的结构式。
6 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。
7 efficiently
adv.高效率地,有能力地
  • The worker oils the machine to operate it more efficiently.工人给机器上油以使机器运转更有效。
  • Local authorities have to learn to allocate resources efficiently.地方政府必须学会有效地分配资源。
8 vats
varieties 变化,多样性,种类
  • Fixed rare issue with getting stuck in VATS mode. 修正了极少出现的VATS模式卡住的问题。
  • Objective To summarize the experience of VATS clinic application. 目的总结电视胸腔镜手术(vats)胸外科疾病治疗中的临床应用经验。
学英语单词
Ac flo
al ula
allotriomorphic
angleton
antenna array factor
apartheidized
articular sclerite
assisted take-off rocket
autolatinas
autoloaded
babbitted
ball diffuser
bediademed
Berlepsch's tinamou
bet one's bottom dollar
Bogoslovskite
Bond and Wang theory
cell attribute
chatou
circuit loading
co-pay
come to someone's ear
concessionaries
contract of marine insurance
Cowan screen
culicoides (culicoides) sumatrae
cuprometry
current information
daylight visibility
demilitarisations
draught indicating system
dromaeosaurine
earun
euxiphydria pseudoruficeps
evozine
fabric-reinforced seal
family Hexanchidae
farandine
fingerbreadth(s)
fixed review cycle
floor covers
forming-tool
fulling
gave the glad hand
gives in to
gravity dumper
hypothesize and test
ICI154129
interex
jading
Keep Britain Tidy
kernel of a morphism
Leptomyxida
light globe
long branch routine
Luanda
manahan
Merlucciinae
mucro sterni
musculus peroneus longus
Myosotis sparsiflora
navigation mesh
needle force
nitrogen 14 beam
observation and recording device
patellar dislocation
paucispiral
penetrant material
people-on-street
perithallia
phosphoenoloxaloacetic acid
placement treatment
plouviez
presbytiss
Project OXYGEN
propheticality
protective import duty
psammosarcoma
pseudolikelihoods
punch function
reorganization
roundnose tool
safety of civil aviation
sandries
Sasanguasaponin
saums
scamming
Septoria dianthi
simple effect
stasis-field
stimulus isolator
subordinate unit
suggestion-box
sweet bells
Taysider
traffic recorder machine
transient condition
travel ring
try engine
under ground economic
variabilis
vegetable wharf