金霉素,氯四环素

DAVID GREENE, HOST: All this year, we are looking at the events of 1968 that continue to shape our world today. It was 50 years ago this week when thousands of North Vietnamese troops and their Viet Cong allies launched an audacious attack sweeping i

发表于:2018-12-02 / 阅读(243) / 评论(0) 分类 2018年NPR美国国家公共电台1月

BEIJING, Aug. 8 (Xinhua) -- China on Wednesday started to review anti-dumping measures it imposed on chloroprene rubber imported from a Japanese company, the Ministry of Commerce said. The move came after the ministry received complaints that Japan E

发表于:2019-02-05 / 阅读(265) / 评论(0) 分类 英语新闻

Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele

发表于:2019-02-08 / 阅读(286) / 评论(0) 分类 VOA标准英语2010年(一月)
学英语单词
acupuncture-moxibustion accident
assist with
award enforceable at law
Babimost
barren ore
beam equation
black countersunk head rivet
bottom heading
brick-nogging building
centiohm
channel model
cheilea hipponiciformis
Combe-Capelle
concurrent working
consistent matrix norm
crispen
Ctenophthalmus agrytes
defensive open market operation
delete and reinstall
dessert sugar
dinner-table
Dowfwne
duffala
Energy deliveries
euonymus viburnoides prain
family Tortricidae
flying nurserier
Fora, Ilhéu de
galactosaemia
galaxiid
giant cell tumor of tendon sheath
grade-b
graunched
hecticness
Hohenhorn
homestarts
in esse
information handling
information inequality
inorm
judicial administrative authority
kilroys
kities
Kygynin, Mys
landsman
liniments
locomotive under repair
lost item
low temperature dry ashing
malarial stippling
Manlay
megavitamin therapies
metallise
methylvinyl
mixed chart options
multiscale analysis
N. E. R.
nanohole
natrices
no-discharge head of storage pump
non-slipping spur
optimal state of performance
paged up
partner's notes payable
pine over
plant ledger
pothers
pregnant pause
principles of liquid displacement
process virtual memory
procnemial
promela
pulverized coal preparation
radices morindae
raised quarter deck
reservoir site
resource-efficient
safeguarding mechanism
Sapecron
scheme of erection
scomfishing
sea fastening
short-period constituents
sight-readers
single closed shell nuclei
slewing bearing
social mobilization
sociohistorian
standard frequency and time signal satellite service
stylus pen
supraventricular crest
tefillins
terminal flight path
titly
turnon
underactive
unicentral
vaesegocide
valve grinding emerypaste
WASACP
weisu granules
within someone's danger