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


英语课

This is Scientific American’s 60-Second Science. I’m Steve Mirsky. Got a minute?


Generations of American children have been told, “Eat your broccoli 2!” And for decades, researchers have known that broccoli and related vegetables like cauliflower and watercress appeared to lower the risk of some cancers and that compounds in the vegetables could kill cancer cells. But how the cruciferous veggies worked their medical magic was a mystery until now, because researchers have figured out just what broccoli does that helps keep cancer in check. The work appears in the Journal of Medicinal Chemistry.


Proteins coded by the gene 1 p53 help keep cancer from starting to grow. But when the p53 gene is mutated, the protection is gone. Mutated p53 is implicated 3 in about half of all human cancers.


Broccoli and its relatives are rich in compounds called isothiocyanates, or ITCs. And these ITCs apparently 4 destroy the products of the mutant p53 gene, but leave the healthy p53 proteins alone and free to suppress tumor 5 development.


The researchers write that “depletion of mutant p53 may reduce drug resistance and lead to new strategies for treating cancer in the clinic.” In the meantime, eat your broccoli!


Thanks for the minute. For Scientific American’s 60-Second Science, I’m Steve Mirsky.



1 gene
n.遗传因子,基因
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
2 broccoli
n.绿菜花,花椰菜
  • She grew all the broccoli plants from seed.这些花椰菜都是她用种子培育出来的。
  • They think broccoli is only green and cauliflower is only white.他们认为西兰花只有绿色的,而菜花都是白色的。
3 implicated
adj.密切关联的;牵涉其中的
  • These groups are very strongly implicated in the violence. 这些组织与这起暴力事件有着极大的关联。 来自《简明英汉词典》
  • Having the stolen goods in his possession implicated him in the robbery. 因藏有赃物使他涉有偷盗的嫌疑。 来自《现代汉英综合大词典》
4 apparently
adv.显然地;表面上,似乎
  • An apparently blind alley leads suddenly into an open space.山穷水尽,豁然开朗。
  • He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
5 tumor
n.(肿)瘤,肿块(英)tumour
  • He was died of a malignant tumor.他死于恶性肿瘤。
  • The surgeons irradiated the tumor.外科医生用X射线照射那个肿瘤。
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acaulospora scrobiculata
ADAM (advanced data management system)
adrenoerythrin
affective and conative processes
agammaglobulinemia
as a result
atomic substitution
automatic sequence controlled calculator
Bacteroidales
beet blights
Benday process
berberenine
best quasi-linear estimator
broad beam head lamp
Byrranga, Gora
Campbell Seamount
Catasauqua
clean metal
cleaning web indicator
COFC
combirope
contracting job
control perception
crimpspin machine
cumulative legacy
decomposable searching problem
derartus
desyatina
double-pumping action
eclosion progress
Farg'ona Viloyati
final date for filing
fine regfulation
flat retractor
Flymo
general import
genus Phalaenoptilus
harriet beecher stowes
hibernacles
hitch a ride
holding bracket
Howe truss
huckle bones
hydrolutyte
intracytoplasmic inclusion
iodophosphide
isleted
items received in advance
jacketed portion
JASDAQ Securities Exchange
Jerry Lee
junior system analyst
Lake Kineret
light cannon
light tile
limonane
low flow observation
Mannagettaea
mercury coulometer
million dollar baby
moisture regain
musical talent
null setting device
odophone
one-parametric loading
ophthalmatrophia
polymerisates
portable X-ray equipment
poursuing
preferred temperature
pseudocercospora rhapisicola
quality system review
rain gush
resected tonsil
scheme of society
sedoanalgesia
segmentation in intestine
separate-excited block oscillator
Sesheke
shay chloroma
single-pulse decatron
single-round survey
snortier
solubor
spontaneous restoration
Stelleroidea
sub network
time-interest-earned ratio
toluhydroquinone
trachomedusan
transport control number
trombone system
uppercase
vacuum-pressure pump
van der Waals structure
vances
West Jersey
wet avalanche
Wheel midship!
writer of time
zecchinos
zero-resistance phenomenon