有效性

facility of access的用法和样例:

例句

  1. I doubt the effectiveness of the medicine.我怀疑这种药的有效性。

AA: Im Avi Arditti with Rosanne Skirble, and this week on Wordmaster: Just in time for those unattainable New Years resolutions, the art -- and danger -- of making excuses. SCHLENKER: What excuses do is try to diminish personal responsibility.RS: Bar

发表于:2018-12-03 / 阅读(55) / 评论(0) 分类 英语单词大师-Word Master

Broadcast: Jan 31 2003 The World Health Organization is warning countries to take steps to prevent terrorist attacks on food supplies. About 1.5 million people, most of them children, die each year fr

发表于:2019-01-03 / 阅读(50) / 评论(0) 分类 VOA2003(上)-健康之旅

Broadcast on Coast to Coast: December 12, 2002 AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster: Just in time for those unattainable New Year's resolutions, the art -- and danger -- of making excuses. SCHLENKER: What excuses do i

发表于:2019-01-25 / 阅读(44) / 评论(0) 分类 词汇大师(Wordmaster)

Last month, Ben Schlappig's Instagram page showed him jetting out of Beijing, dining on coffee and cake in Germany and marveling at the Los Angeles skyline from the top of Mulholland Drive. 上个月, 本斯拉必格(Ben Schlappig)的Instagram主页上

发表于:2019-02-01 / 阅读(101) / 评论(0) 分类 阅读空间

BEIJING, Sept. 14 (Xinhuanet) -- Scientists had discovered the fossils of a new species of ancient carnivorous fish, National Geographic reported Monday. The newly-found ancient fish, Laccognathus embryi, is a 1.8-meter-long predator, which was waiti

发表于:2019-02-18 / 阅读(85) / 评论(0) 分类 英语新闻

Israeli(以色列) researchers say they have developed a powerful bait that effectively attracts and kills malaria-infected mosquitoes but is completely harmless to humans and other animals. The toxic sugar bait developed by scientists at Hebrew Univ

发表于:2019-02-25 / 阅读(86) / 评论(0) 分类 英语新闻
学英语单词
acute accents
aheneus
American wheel
amount of share
apocrotonosine
archaeal
auric sulfide
aversion to cold with fever
bendabilities
Borges, Jorge Luis
bulk terminal
buzzphrase
Canna edulis
centre yarn
certification of carriage
Cestrum aurantiacum
chloromethyl acetate
compaction grouting
coubustibility of wood
crowme
current, foldback
cuspid-
D-BIL
demersing
diogenite
Djerid, Chott
double-size
electoral office
electronically scanned radar
enterprise integration
epidemic spawning
episcopising
eternize
evenly even
flavr
gandy dancer
give someone the ax e
glialcell
glide path indicator
going-concern theory
helicis minor
hemp thread and yarn
hit-maker
housekeeper
hydrofluorocarbons
ichthyootoxin
inflamability limit
leftsided
lichtensteins
liliaceous plants
line commutated converter
low abundance protein
lower bridge jolly boat
mcmurtry
Melonechinus
methyl-atropine-bromide
minority emitter
moisat
molecular weight
musculi iliacus
negational
no payment
ocular blind
osmium monohydroxytrichloride
Pakhomovo
passive illusion
pasture thistle
pelvis (pl.pelves)
pensando
Piloxing
planshire
plataleiform
plicamycin
populus nigras
post-modifiers
postered
postovulatory
postrooms
producerist
psychological effect
public-record
registration of the yield
remote control ignition
Rāf, Jab.
semifree
slab-on-ground
Smith, Hannah Whitall
society-wide general retail price index
spring clean
star track
strumigenys konteiensis
tagger
terminal homing vehicle
the Balkans
thin skin model
tin printing oven
took good care of
tuft column
viridiflora
writing bond paper
zide