环状膜

On December 25, 2000, many people across North America received a rare Christmas treat when the moon passed in front of the sun resulting in a partial solar eclipse. Solar eclipses occur when the moon passes between the Earth and the sun, and the moo

发表于:2018-12-03 / 阅读(72) / 评论(0) 分类 听英文对话做选择

Rachel Lee: The housing market keeps losing steam. Sales of previously owned homes fell 5. 7% last month according to the National Association of Realtors. If you're looking for a house , the group's

发表于:2018-12-05 / 阅读(88) / 评论(0) 分类 商业报道2006年

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(一)月

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. This week, we will tell about an American study of the brain disorder schizophrenia. We tell about cars that use hydrogen as fuel. And,

发表于:2019-01-11 / 阅读(124) / 评论(0) 分类 VOA慢速英语2008(十)月

Copper Metal Kills Viruses on Contact 铜能杀死细菌和病毒 Even in the world of medicine, what is old is new again. 医药界也刮起了复古风。 Thousands of years ago, Egyptians used it to sterilize drinking water. Ancient Romans, Aztecs

发表于:2019-01-12 / 阅读(153) / 评论(0) 分类 2016年VOA慢速英语(二)月

AS IT IS 2016-09-02 Ring of Fire Eclipse Passes Over Africa People in parts of Africa witnessed a ring of fire in the sky Thursday, created by the moon passing between the Earth and the sun. The solar event is called an annular eclipse. A total solar

发表于:2019-01-12 / 阅读(85) / 评论(0) 分类 2016年VOA慢速英语(九)月

(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g. The hydrogen atom is near1y l6 times as

发表于:2019-01-17 / 阅读(70) / 评论(0) 分类 英语口译

英语中表示倍数减少的表达方法(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g

发表于:2019-01-17 / 阅读(85) / 评论(0) 分类 英语口译

Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c

发表于:2019-01-26 / 阅读(140) / 评论(0) 分类 经济学人科技系列

Going to bed in icy bedrooms, getting up in icy bedrooms, waiting patiently for Mum to spare a little hot water from the great kettle on the hob so that washing was not a teeth-chattering, painful ordeal. One day small Hal started to cough and wheeze

发表于:2019-01-29 / 阅读(100) / 评论(0) 分类 荆棘鸟

An annular solar eclipse is seen formed over the sky of Burma's ancient historic city of Bagan, 15 Jan 2010 Holly Gilbert, an astrophysicist at NASA, explains the science behind the spectacle of the sun's disappearance. So during a total solar eclips

发表于:2019-02-03 / 阅读(99) / 评论(0) 分类 VOA标准英语2010年(七)月

第一招:在电脑旁放上几盆仙人掌,它可以有效地吸收辐射。 第二招:对于生活紧张而忙碌的人群来说,抵御电脑辐射最简单的办法就是每天上午喝2至3杯的绿茶,吃一个橘子。 第三招:上网

发表于:2019-02-03 / 阅读(107) / 评论(0) 分类 阅读空间

水泥英文单词 矿渣水泥slag cement 硅酸盐水泥portland cement 主导产品leading product 年产量annual output 基准reference 体系system 完全燃烧complete combustion 不完全燃烧incomplete combustion 机械不完全燃烧mechanical incomplete combustion 化学不完全燃烧

发表于:2019-02-07 / 阅读(193) / 评论(0) 分类 英文语法词汇

Drugmakers and antibiotics 制药商和抗生素 The path of least resistance 最省事的办法 Governments reckon that drug firms' research efforts need a shot in the arm 政府认为需要鼓励药企的研发工作 A GROWING worry in medicine is

发表于:2019-02-16 / 阅读(96) / 评论(0) 分类 经济学人商业系列

在我们的生活中,死亡是我们所有人必定会遇到的事情,无论是家庭成员还是宠物,甚至是你都将有终结之时。事实上,每分钟世界上大约就有100人死亡。但在人死之时到底会发生什么呢?

发表于:2019-02-17 / 阅读(119) / 评论(0) 分类 阅读空间

2010上海世博会:日本馆之面观 The Japan Pavilion, which is always among the most popular pavilions during previous World Expos, is expected to attract 17,000 visitors every day,The centerpiece performance of the pavilion will be an opera w

发表于:2019-02-22 / 阅读(119) / 评论(0) 分类 实用英语

Science and technology 科学技术 Microbiomics 微生物组学 A virus shield 病毒防护 Viruses help keep people disease-free 病毒能够帮助人类免遭疾病 THE story of the microbiomethe community of tiny organisms that coexist symbiotica

发表于:2019-02-24 / 阅读(114) / 评论(0) 分类 经济学人科技系列

Amd of course, you've just heard and you already know that we're running out of antibiotics. 当然,你一定听说过,而且你早就知道了,我们快要没有有效的抗生素了。 Bacteria are incredibly multi-drug-resistant right now, a

发表于:2019-03-04 / 阅读(93) / 评论(0) 分类 TED演讲教育篇

then, ascending by a ladder to the summit, have a peep down the mouth; 然后,用一架梯子爬到那峰巅去,往下瞧一瞧它的嘴巴。 and were it not that the body is now completely separated from it, 如果它那身体现在不是已跟脑

发表于:2019-03-10 / 阅读(209) / 评论(0) 分类 白鲸记

I think that all this indirectly proceeds from the helpless perplexity of volition, 因此,我认为,这种种由于意志纷乱无能而间接产生的现象, in which their divided and diametrically opposite powers of vision must involve them

发表于:2019-03-10 / 阅读(215) / 评论(0) 分类 白鲸记
学英语单词
a-quarter
acers
Aconitum phyllostegium
adoptive acquired immunity
allow transition
antibreeding
astrantias
automatic tape relay
auxiliary core
axwort
ballhawks
black amino alkyd baking transistor paint
cancer sera
Chanaan
channel conflict
cheesecutter
chlorogomphus brevistigma
chocking resistance
chrome plated
climacterical
computer tape
confabulate
dimmer pedal
Dolgeville
downlikest
dry developer
dry rubbled masonry
East Africans
efficiency of cargo handling per man-shift
ethyl octanoate
form-wound motorette
free-stream turbulence
Gelidocalamus kunishii
genus coccyzuss
good neighbourliness
hard swell(ing)
high mobility
Houtave
hydrolysable tannin
ICIS
insuavis
lean sand
lobo-
maceoin
magnetic levitation system
manoeuvreing
Marnoo
mirror fugue
Mitchell R.
multiple plunger pump
netlist comparator
Nidularium
nitrituria
non ferrous ingot
non-acid
normanicythere sogwipoensis
Odersberg
pentametre
perceptional geography
personal traits
phelims
phenological division
pickling wire
Plant-sociology
posterior facial vein
pressure fixing
quotably
rabanne
ratio of discounted net benefit to cost
rebeginning
reproductive duct
royleana
sciurus carolinesis
self-organizing controller
senecifoline
siliceous deposits
single-port amplifier
stand-ups
Stent's mass
stereoblock
stringlike
superconductor stabilization
systemic hypertension
tealer
thalictrifoline
thrust bucket
timber grillage footing
tomw
torsion balance
toy-shop
Tremacamra
troxundate
upsmapling filter
uranium oxide-chalcogenide
variable speech control
ventriloquism effect
Web Accessibility Initiative
weesel
well-changed
wikiquette
ywrapped