(含铅汽油)光敏性试样

A: Why are you handing me a plastic cup? B: Your doctor wants to test your urine and needs a sample. A: How am I supposed to do that? B: We need you to urinate like you normally would, and then stop and finish into the cup. A: What am I supposed to d

发表于:2018-12-02 / 阅读(215) / 评论(0) 分类 英语情景对话-健康

Gene Therapy Halts Vision Loss in Dogs Researchers have stopped vision decline in dogs with an inherited disease that causes blindness. The gene therapy technique they used may someday stop vision loss in humans. Retinitis pigmentosa (RP) is an eye d

发表于:2018-12-16 / 阅读(144) / 评论(0) 分类 VOA标准英语2012年(二月)

A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then

发表于:2018-12-16 / 阅读(173) / 评论(0) 分类 英语情景对话-健康

Bringing up a sensitive topic Can I talk to you for a minute? Can I ask you something? Do you mind if I ask you something? I need to talk to you for a minute. I have to tell you something. There's something I need to tell you. There's something I thi

发表于:2018-12-17 / 阅读(187) / 评论(0) 分类 跟我学英语入门篇

Sometimes it is hard to see the light, especially it lies in the invisible spectrum, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of

发表于:2018-12-24 / 阅读(153) / 评论(0) 分类 2015年Scientific American(一)月

[00:06.37]Some people cannot see all colors correctly. [00:10.92]They cannot see all the colors in a rainbow or a sunset. [00:16.40]They cannot tell if the meat they are cooking is done or if a fruit is ready to be eaten. [00:23.61]Poor color sight a

发表于:2018-12-26 / 阅读(134) / 评论(0) 分类 美国英语听力80篇

Night Vision And Humans: Why Cant We See Color? When we are in a fairly dark room, or outside at night away from lights, we can still see, but we cant see the colors of things very well. Why is that? There are two kinds of light-sensitive organs loca

发表于:2018-12-31 / 阅读(161) / 评论(0) 分类 英语听力文摘 English Digest

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-02 / 阅读(129) / 评论(0) 分类 60秒科学

Smaller Fingers Mean More Sensitive Fingertips A study in the Journal of Neuroscience finds that people with smaller fingers have more sensitive fingertips, probably due to a higher concentration of touch receptors in a given area. Cynthia Graber rep

发表于:2019-01-02 / 阅读(185) / 评论(0) 分类 60秒科学

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-08 / 阅读(176) / 评论(0) 分类 Scientific American(六)月

Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of

发表于:2019-01-11 / 阅读(186) / 评论(0) 分类 英语杂谈

今天我们要学的词是sensitive。 Sensitive, 是敏感的意思。A sensitive topic, 就是敏感的话题。 Employment experts warn job seekers not to give out sensitive personal information when applying for positions online, 就业问题专家

发表于:2019-01-20 / 阅读(112) / 评论(0) 分类 英语单词荟萃

By Paul Sisco Washington 16 April 2008 A congressional subcommittee recently heard testimony that sensitive aircraft technology and a vast array of stolen military gear is for sale on eBAY, Craigslist and other Internet sites. A Government Accountabi

发表于:2019-01-20 / 阅读(192) / 评论(0) 分类 VOA常速英语2008年(四月)

Below you will find a sample outline and the essay written from that outline. OUTLINE Paragraph 1 (Introduction) I. Leading sentence: It took me eighteen years to realize what an extraordinary influence my mother has been on my life. II. Summary of m

发表于:2019-01-20 / 阅读(224) / 评论(0) 分类 实用英语

Because from trillions of miles away, these small planets get lost in the blinding glare of their stars brightness. The sad truth of the matter is that earth-like planets are near cosmic specks of dust. And therefore detecting them is really quite ha

发表于:2019-01-22 / 阅读(138) / 评论(0) 分类 自然百科2010年

Cats And Colors You can look at that quilt your cat is curled up on and see a patchwork of greens, blues, and yellows. Your cat, however, cannot see color variation in the quilt. And here is why. Both humans and cats depend on the back layer of the e

发表于:2019-01-22 / 阅读(168) / 评论(0) 分类 英语时差8,16

今天我们要学的词是sensitive。 Sensitive, 是敏感的意思。A sensitive topic, 就是敏感的话题。 Employment experts warn job seekers not to give out sensitive personal information when applying for positions online, 就业问题专家

发表于:2019-01-25 / 阅读(148) / 评论(0) 分类 英语每日一词

Lesson 332 He's sensitive. 1.He's sensitive.他很敏感。 2.Don't be so sensitive.别那么爱过敏嘛。 3.You're too sensitive.你太敏感了。 4.It's sensitive question.这是个敏感的问题。 5.The instrument is sensitive.这仪器很灵敏

发表于:2019-02-12 / 阅读(194) / 评论(0) 分类 辛沛沛NO-BOOK 辛沛沛傻瓜机口语极短句

Cats And Colors 人类能够很容易的分辨出不同的颜色。那么猫呢?虽然猫的视力很好,即使在非常昏暗的光线条件下也能看见,但它对于如何分辨不同的颜色似乎并不擅长。 Cats and Colors on this mo

发表于:2019-02-24 / 阅读(145) / 评论(0) 分类 英语听力文摘 English Digest

A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then

发表于:2019-02-27 / 阅读(189) / 评论(0) 分类 健康-Health
学英语单词
accrual postulate
accumulator plate
ali-esterase
allyl isorhodanate
Amsco G
anisaldehyde
arachisoil
arhinencephaly
asynchronization
bare-bum
basic objective of audit program
beam and column
bone lazy
bull noses
calcium-magnesia phosphate fertolizer
Cassilis
Castanopsis megaphylla
certainest
clitoris elongation
co-original
column jump
constant-pressure-pattern flight
conversion of array name
converted marchantman
counterdemos
cyanate
deep sea floor geology
do window shopping
draught control mechanism
eastern churches
euglycemia
flowing space
four three two one
free line condition
gene signature
Godfearers
guarantee money from employee
Gubler's paralysis
helicoidal surface
hide oneself
high-range dosimeter
hypoxias
infernities
integrated survey
investment management service
IP layer
ipronidazole
kitchenscapes
Kordofanian
Kril'onskiy Poluostrov
magnetooptic(al) switch
makena
male hypogonadism
Malleostapediopexy
methyl-stannonic acid
microprocessor control feasibility
moderation of neutrons
musets
National Environment Policy act
nonparasitized
oriented surface
orthotropic solid
outperforming
panola
pleuronectid
polythene film in agriculture
pot sweating
pre-filtering
precollagenous fiber
prosperous and strong
regional diversity
right to attend shareholder annual meetings
ring fold
Savuto, Fiume
scale line
seelie
semi-pelagians
sophisticated shooting
Special Weapons and Tactics team
specific order cost system
spensol solutions
split pattern molding machine
standard wave form
stander
stationary random sequence
subsidence
take classes in
tcam control task
telemeter transmitting set
temperature-compensated Zener diode
Trapichito
trill-trill
twin shoot
upper edge line
use the toilet
veneer rock
ventilation plan
warranted period
wbtv
well-wreathed
Wien-bridge oscilator
wrether hail