生物硅;生物硅

Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,

发表于:2018-12-31 / 阅读(44) / 评论(0) 分类 英语听力文摘 English Digest

AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be

发表于:2019-01-12 / 阅读(65) / 评论(0) 分类 2015年VOA慢速英语(七)月

AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin

发表于:2019-01-19 / 阅读(56) / 评论(0) 分类 2018年NPR美国国家公共电台12月
学英语单词
action prompt
adcomps
addressy
atmospheric drag perturbation
avision
barnegat bay
best maneuvering speed
bleaching damage
block capitals
bromochloroacetic acid
carcass splitting saw
cathode-luminescence
characterizing group
chemical carcinogen
chloramphenicol pantothenate
CIA
commutated doppler
control-loop gain
cufflinked
cuticuras
cyberattacker
dehumidifying agent
double-tracer technique
doublet splitting
epigonal body
escheat and forfeiture
ex-hippies
eyelet work
false bruit
fan-mails
fire-proof
galactic habitable zone
gender dysphoria
Gibbs relation
grows in
have the right end of the stick
hereditary condition
hesperis trichosepala turcz.
high-energy ion injection
influx time
insulating oil
intelligibility
Isla, Strath
jaffars
joseite-A
Kegaska
kubisgari
Kumamoto-ken
Lilium brownii var. viridulum
low-temperature carbonization
machine scheduling
metanephros anlage
missile defence alarm satellite
motor protector
multivariable feedback control
Narcissiflorine
nasty piece of work
nestohedra
normal tissue
Novgorodskaya Oblast'
ovaliform
parabiotic inhibition
pengelley
Pisalcid
polyvinyl acetate resin
prepossessingness
propylitic alteration
puts someone on
quality program
quotidienne
Rehderodendron kweichowense
roller nip
roof periodic caving
saccobolus minimus
sanskaras
sedimentary
serial-parallel combination counter
sexual love
silk-cotton trees
slave transmitter
sogne fjord
spatial and temporal pattern
spring center
staddling
step rail
stimulus irritant
stood off hour
store support procedure
strongly ideal system
subplotting
subsonic acceleration
superstructure deck
syncopexis
tank furnaces
thysananthus aculeatus
to sum up
tower crane with slewing cat head
vacuumous
variometers
vasiles
water body sediment
wdet