a. 无茎的, 无梗的
a. not having a stem

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Rwanda Invests in STEM Education for Girls Yvonne Kevia is an 18-year-old high school student in Rwanda. She wants to become a chemical engineer. She enjoys doing experiments and taking careful notes in her high school laboratory in Kigali, Rwandas c

发表于:2019-01-02 / 阅读(47) / 评论(0) 分类 2017年VOA慢速英语(十二)月

By Alex Villarreal Washington 28 February 2008 Adult stem cell therapy has successfully treated leukemia and other cancers for years, in the form of bone marrow transplants. A new study in the Journal of the American Medical Association [JAMA] finds

发表于:2019-01-25 / 阅读(213) / 评论(0) 分类 VOA常速英语2008年(二月)

> 39 脂肪中的茎细胞有助于治疗糖尿病 DATE=4-26-01 TITLE=SCIENCE REPORT- Stem Cells in Fat BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(79) / 评论(0) 分类 科技之光

By Jessica Berman Washington 19 December 2007 Stem cell research was the major medical and science story this past year, topping the list of achievements that experts say might finally lead to cures for many diseases. Meanwhile, global health officia

发表于:2019-02-17 / 阅读(74) / 评论(0) 分类 VOA常速英语2007年(十二月)

Japan's government and the country's central bank took action Thursday to dilute the yen. The Japanese currencys strong standing against the dollar is making exports more expensive, hurting efforts to revive the country's moribund economy. After many

发表于:2019-02-18 / 阅读(63) / 评论(0) 分类 英语新闻

今天我们要学的词是stem from. Stem spelled s-t-e-m, stem; and f-r-o-m, from. Stem from是源自,来源于的意思。The UN said Syrian government forces are responsible for most of the violence stemming from the country's unrest. 联合国表

发表于:2019-02-18 / 阅读(72) / 评论(0) 分类 英语单词荟萃
学英语单词
addressing error
Adelgidae
air gap gauge
American trypanosomiasis
Amphidium
arbane
asagi koynuk
ascoma
auxiliary-verb
baby coverage
back mixing
backswamp depression
be up for grabs
biochemistry of plant
Bloembergen, Nicolaas
Bodonidae
bold-face
bonython
booth brass furnace
carboxy-terminal repeating heptamer
catfished
chequerboard scan
chlamydomonas umbonata
chromatospherite
circularly polarised light
co-finances
coming into your own
convolvulus sepiums
coolhunting
coordinate machine
corrosive-proof cable
cut-flight conveyor screw
cyan layer
cyclone-type after-condenser
cypritic steel
Darlan, Jean Louis Xavier Framcois
database memory
day night rhythm
dirj (daraj)
discerned
drag ... out of
ex-residents
folding screen
fuel air explosive
Fusan
gelatin foil
genus nepetas
genus Vespula
Haber ammonia process
hang ... on
heatproof filter
hydraulic bumper cylinder
icewater
in fere
intra-ureteral
irritancy
Kesteven
liquid distribution
lubricating oil consumption rate
ludwigii
make an inference
merothrips indicus
MFM (modified frequency modulation)
MIDPs
multiplication capacity
neutron conservation principle
nonbonding (molecular) orbital
nonlinear optical effect
open admissions policy
Paravesicular
Peristylus affinis
physical causes
plate glazing
polar coordinate system
post bail for someone
powder dye
re-roofed
respirable aerosols
rumplestiltskin
run around like a headless chicken
scavenging jig
sere variant
sodium fluoscandate
space maintainer
stable response
steady-state discharge
steam sampling
syntax-oriented processor
taurophobia
terbium bromide
thomas-reiche-kuhn sum rule
three-axis stabilized platform
tonnage of traction
toughman
trimetrogon
unhelpful
unique DNA
uppas
valve current
wadders
walburgas
watergangs