胍甲环素,胍哌四环素

Studies Link Bee Decline to Insecticide Billion-dollar bees Bees pollinate the flowers that become fruits, nuts and vegetables. The work these insects do is worth about $18 billion a year to U.S. farmers. But honeybee colonies in the United States ha

发表于:2018-12-16 / 阅读(32) / 评论(0) 分类 VOA标准英语2012年(三月)

Air Pollution Linked to Cognitive Decline Several years ago a massive survey of women called the Nurses' Health Study began collecting data on memory, thinking skills and other cognitive measures. Jennifer Weuve of the Rush Institute of Healthy Aging

发表于:2019-01-14 / 阅读(49) / 评论(0) 分类 VOA标准英语2012年(二月)

Bat Populations Still in Decline Bats are an amazingly diverse group of flying mammals that can be found in virtually every corner of the world. Because they're mostly nocturnal and a few types feed on animal blood, bats have acquired a rather dark r

发表于:2019-01-14 / 阅读(46) / 评论(0) 分类 VOA标准英语2011年(八月)

World Press Freedom Declines Just one out of six people across the globe enjoyed a free press last year. Freedom House President David Kramer says the global decline in press freedom is a huge concern. A free press is critical to any country's democr

发表于:2019-01-14 / 阅读(40) / 评论(0) 分类 VOA标准英语2013年(五月)

EU Hopes Pesticide Ban Will Halt Bee Decline The targeted farm chemicals, which will be banned for two years starting this December 1, belong to a class of insecticides called neonicotinoids. They are a type of insect nerve agent that has been widely

发表于:2019-01-14 / 阅读(55) / 评论(0) 分类 VOA标准英语2013年(五月)

今天我们要学的词是decline。 Decline, 拒绝。 The company declined to offer any specifics about its layoff plan, 这家公司拒绝透露裁员计划的有关细节。 The source declined to be identified because of the sensitive nature of

发表于:2019-02-18 / 阅读(39) / 评论(0) 分类 英语单词荟萃
学英语单词
'ud
a dead end
address display
alternate function
autochrome circuit
beneath someone's notice
Benzononatine
blanking peak signal
Chatham, 1st Earl of
coal-powered
Colins helium liquefier
combustion chamber brace
conglomerator
control roll
crane wheel pairs and blocks
deep camber
deoxyribonucleic acid methyltransferase
donor material
early-warning station
ecopsychiatric
extl.
extra-curial
Fighting The Tape
Fisher information
floating disc type output mechanism
forming pliers
free hugs
fuligo intermedia
geothermal anomaloas region
glisodin
glutamylcysteine
grabbiest
gradation test card
gravitational magnitude
gunfaneur
halictidaes
handbagging
heat-actuated device
high tension distribution system
hull sloping plate
huperzines
IFMEBE
il (insulin-like)
infectious psychosis
influence-peddlers
isoterp
jade object
john rowlandss
laminose
lawrence-livermore
lever assisted cutting pliers
maximax decision rule
maximum working area
mechanical vibration generator
midlers
mosstick
multi-frequency
nannoes
napte
nominal fracture strain
nosology
oculesics
pamperings
phenylahistin
poorable
president john quincy adamss
problem of adjustment
pull in with
pulsed-spray arc welding
railway tie
re-interview
read-after-write scheme
remirroring
remote job entry terminal system
rhabdomyoma of heart
riding bitts
safe storage of dangerous goods
satellite-based interceptor system
scorbutus oris
service practice
sherardizing medium
slight skewness
soda jerk
spacing and population tests
specky goods
ST_technology_the-postal-system
stainless try square
static characteristic corve
suchandsuch
suspended level
talkathon
temelin
three-series theorem
toe cracks
tormentress
tritonymphs
TyrD
underground cavity survey
unpaled
unsubstantiality
Wārām, Kowtal-e
Yin grows while yang is generating