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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(44) / 评论(0) 分类 VOA标准英语2012年(二月)

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(35) / 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(35) / 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(51) / 评论(0) 分类 英语听力文摘 English Digest

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(45) / 评论(0) 分类 英语时差8,16

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(39) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
acrocephalosyndactyly
adhesive tube
alternate card device source
alternate displays
American plaice
arecin
Areopagitic
asiopodabrus sakaii
bang one's head against a brick wall
beebs
Behrens-Fisher test
blotter paper
buccal gland
cherry kernel oil
clip plate
clutch shoe
colossal magnetoresistance (cmr) material
commissive
cormogeon
drug-fighting
duchessing
elysian fields
ephemerals
firyubins
FIV1
form correction repair
free air diffuser
freshening
full availability
gauge factor
groundwater pressure head
haitises
headboards
heavy hydrogen plant
high-sensation
Ictalurus punctatus
iij
image editing tool
IMRU
irritable ulcer
Itum-Kale
j-r
jockteleg
khuens
kingpin bearing
lay chase
limited guarantee
livistona chinensis subglobosa
lymphoglandular
mating standoff
Mayer problem in calculus of variations
mean neutron lifetime
misc-
moving centrode
multi-span skyline
myriachit
Nashwah
naval units
net-net weight
Newson's boring method
noncomitance
nondominated solution
parallel tangents (partan) method
parkoured
pass-time
past progressives
patent blue A
pattern positioner
pay by the piece
pentadecanol
presacral insufflation
pterodactylane
reactor-produced
recombination with double excitation
reconceptualization
reel video tape
rice cooler
shiffmen
skeet gun
snapping beetles
somnambulance
standardized mortality ratio
subirrigates
swiezy
teldecs
tenuirostris
Tetrapanax tibetanus
theory of retribution
thermoperm alloy
tidal mud flat
toils
trionyx nigricans
tropospheric scatter propagation
ultrared
uniform pitch
untensioned rail fastening
uremic myocardiopathy
vitara
Wendlandia ligustrina
white cypress pines
wouldn't hear of
zeroslip