音标:[,heptә'sʌlfaid] ;
七硫化物

I couldn't get over this mess. The federal government is confirming what Joan Glickman of Pompano Beach, Florida suspected all along. Tainted drywall from China is giving off a harmful gas that's turning her air-conditioning wiring black, causing it

发表于:2018-12-20 / 阅读(157) / 评论(0) 分类 cnn2009年(十一)月

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(229) / 评论(0) 分类 60秒科学

From VOA Learning English, this is the Health Lifestyle report. Garlic is one of the most common cooking ingredients around the world. Many dishes in Europe, Africa, Asia and the Americas use this strong-flavored vegetable. Garlic is similar to other

发表于:2019-01-12 / 阅读(212) / 评论(0) 分类 2016年VOA慢速英语(十二)月

Black Tongues and Stomach Aches Don: Oh, no, Ya?l, I think I'm having a medical emergency. Quick! Call an ambulance. Ya?l: A medical emergency, Don? Are you sure? You look fine to me! D: But I'm not. This morning, I had a terrible stomach ache. And n

发表于:2019-01-26 / 阅读(140) / 评论(0) 分类 英语听力文摘 English Digest

Sewage stinks. But bacteria can make it smell better. Oh, yeah? That's true. Certain forms of bacteria feasting on sewage give off hydrogen sulfide, a really malodorous chemical, and one of several that give sewage its pleasing smell. In general this

发表于:2019-01-26 / 阅读(154) / 评论(0) 分类 英语听力文摘 English Digest

与数字有关的英语词根总结 milli-【千分之一】例:milliampere(毫安)=milli(千)+ampere(安培) centi【百分之一】例:centimeter(厘米)=centi(百分之一)+meter(米) deci【十分之一】例:decibe

发表于:2019-02-06 / 阅读(266) / 评论(0) 分类 英语学习方法
学英语单词
active corrective maintenance time
Agboville
airmail
allopreening
angle measurement in all combination
at a meeting
beneath someone's feet
bride's basket
cadmium orange
cappanus
Casas de Ves
channelled masonry
cholesterolestertransferprotein
cloak-room
coal-lifting pump
commit an outrage
condensing kiln
Cremanthodium yadongense
cubeba
current field
degaussing component
discretionary purchasing
dispensatively
drive index
droan
echinatine
Eucinostomus
extracellular enzyme
fabric comfort
failure to complete required paperwork
fatherkins
flash period
genus Xanthium
graphic voltmeter
gratz
homologous setum
hooppoe
Hospital, Cuchilla del
hot channel engineering factor
huechys sanguinea (de geer)
Hydrocol process
imanite
in collision
in deed and not in name
intermessage delay
interpolation-sequential search
iridescens
Jagīn, Ra's
jists
John Henry Newman
koreke
latent glide system
laton
Laurensberg
Levaya Kamenka
lifter pin
lig. acromioclaviculare
machine cut tooth
maniacal chorea
marasmius plicatus wakker
micro control
microscosm pollution monitoring
moonphase
Moorehead's retractor
object viewer
orrhos
p17M1234
package, plastic
periarterial
phlebia chrysocreas
phosphoenolpyruvate
primer detonator unit
priority of assignment
protocarbomycin
Puerto de Mazarrón
radiolabeled
Ragunda
rectorite
resistance flash weld
ropeable
sapinine
schedule of arrangement
situational ethics
snow-bank
social graces
super-real
surface gunfire control
technopolis
the expansion
thermal diffusion coefficient
thermochemical theory
Tonkovac
Torricelli
transfers register
triangular dee
Umm Jāsir
uncomfortablenesses
unpaiable
unshiu
video-
working region