精原细胞

spermatogenous cell的用法和样例:

例句

  1. Genetic markers showed the presence of partly-deeloped sperm cells called spermatagonial stem cells, which are an early phase of the male germ cell deelopment.遗传标记显示存在部分分化的精子细胞即精原细胞,男性生殖细胞发育的早期阶段。

By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

发表于:2018-12-01 / 阅读(268) / 评论(0) 分类 VOA2003(下)-环境与健康

柯灵思英语-英语听力高手38

发表于:2018-12-07 / 阅读(154) / 评论(0) 分类 柯灵思英语

[ti:] [ar:] [al:] [by:] [00:01.00] Late At Night, Do You Turn Off Your Cell Phone? 今夜不关机 [00:08.22]Today, my friend asked me a question. [00:11.17]At night, do you turn off your cell phone? [00:14.78]If you dont, whom do you leave it on for

发表于:2018-12-26 / 阅读(203) / 评论(0) 分类 温馨夜读

Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On this Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm an

发表于:2018-12-27 / 阅读(171) / 评论(0) 分类 英语听力广播—Listening

For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea

发表于:2018-12-30 / 阅读(217) / 评论(0) 分类 国家地理2008年

What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i

发表于:2018-12-31 / 阅读(144) / 评论(0) 分类 英语听力文摘 English Digest

The girl would turn her cell phone off and put it by her photo on the desk everynight befor going to bed. This habit had been with her ever since she bought the phone. The girl had a very close boyfriend,when they couldn't meet ,They would either cal

发表于:2019-01-02 / 阅读(165) / 评论(0) 分类 每天一点英文

Egg Cells 卵细胞 Do you know what an egg cell is? 你知道什么是卵细胞吗? An egg cell is necessary for reproduction. 卵细胞是繁殖的必要条件。 Animals have egg cells. 动物有卵细胞。 Then does every animal have egg cells

发表于:2019-01-10 / 阅读(165) / 评论(0) 分类 与美国小学生一起学英文第10册

By Carol Pearson Washington 25 September 2007 A lot of people wonder about the impact cell phones might have on their health. And now a new study shows that heavy mobile, or cell, phone use may result in hearing loss. VOA's Carol Pearson reports. As

发表于:2019-01-11 / 阅读(194) / 评论(0) 分类 2007年VOA标准英语(九月)

By Bill Rodgers Washington 19 May 2008 Cell phones are an example of what is sometimes now called leapfrog technology, a product that allows developing nations the benefits of a reliable and extensive communications network without the heavy investme

发表于:2019-01-13 / 阅读(166) / 评论(0) 分类 VOA标准英语2008年(五月)

Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm

发表于:2019-01-26 / 阅读(155) / 评论(0) 分类 英语听力文摘 English Digest

By Victoria Cavaliere New York 16 October 2007 An annual stem cell research conference in New York has been bringing together some of the field's top scientists to discuss breakthroughs in stem cell research and what proponents call its long-term app

发表于:2019-01-31 / 阅读(192) / 评论(0) 分类 2007年VOA常速英语(十月)

By Paul Sisco Washington 17 April 2008 Federal regulators in Washington have approved plans to upgrade the nation's Emergency Alert System to include text messages to cellphones and other mobile devices. VOA's Paul Sisco has more in this Searching fo

发表于:2019-01-31 / 阅读(176) / 评论(0) 分类 VOA常速英语2008年(四月)

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(339) / 评论(0) 分类 英语新闻

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

发表于:2019-02-07 / 阅读(292) / 评论(0) 分类 趣味英语

By Jessica Berman Washington 19 December 2007 Stem cell research was the major medical and science story this past year, topping the list of achievements that experts say might finally lead to cures for many diseases. Meanwhile, global health officia

发表于:2019-02-17 / 阅读(206) / 评论(0) 分类 VOA常速英语2007年(十二月)

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(241) / 评论(0) 分类 英语新闻

Our bodies are amazing. Although things go wrong at times, it's remarkable they work at all when one considers the complexities of their operation. Don and Ya?l present some awards to a few of the outstanding components. [APPLAUSE] D: Good evening, Y

发表于:2019-02-23 / 阅读(131) / 评论(0) 分类 英语时差8,16

Why You Shouldn't Leave Nude Photos of Yourself on Your Cell Phone The 23-year-old woman lost her cell phone in a restaurant parking lot. By the next morning, someone was texting nude photos of her to everyone. As regular readers have learned many ti

发表于:2019-02-24 / 阅读(189) / 评论(0) 分类 阅读空间

In mammals, the sex of a baby is determined by the combination of chromosomes it inherits from its parents. Nearly every cell in a male body has two different sex chromosomesone is shaped like an X and one is shaped like a Y. Females also have two se

发表于:2019-03-06 / 阅读(196) / 评论(0) 分类 英语时差8,16
学英语单词
accounting assumption
additive action
adiabatic lapse rate of air temperature
adjective dye
Alamogordo
all metal brake lining
anti-neutrophil
autohaus
axis of a pencil of planes
bands of partisans
bath thermometer
better sort
bland embolus
broadband ISDN, B ISDN
buffered FET logic
burned dissociated ammonia
Bzhedukhovskaya
cash in on
cast tow
coelcmic epithelium
combretums
condensation-melting curve
consignment record
corkscrew yarn
Cruyff turns
dark purple
dechristianizing
declaration of alienage
Dendrolobium lanceolatum
detainee
domitic
enfaced paper
epinephritis
epithelially
face flannel
factor blocking
fecker
fleshed-out
forthnights
gage steel
genus marsileas
glass fuse
gleby
glossarian
goes over to
hallez
HEPA (highly effective partical of atmosphere) filter
high-speed electrostatic printer
hogarth's
Hordern
in the short time
Internet cafe
interstitial water
investment advisors act
keep friend with
Kootenal series
Koszul connection
laying and finishing machine
mayhue
Mephedine
merit rating for clerical jobholder's
minute hands
monument mark
Nayarit
non-performing loan
open-cut development
pachychoroidal
phenomenon of beats
pheretima asiatica
pressductor
prevom dumb-bell bone
proportional method
radio resource
ramees
removable bottom hole regulator
San Miguel de Pallaques
sceats
school tuna
sheikhs
silica ramming compound
Skodborg
slick magazines
stainless steel sheet and plate(s)
striped button quail
Sturluson
subgenus Azalea
submicroscopic clustering
synovialinterposing
systemic perspective
telaso velatus
temper tantrums
thermogenous
traction driven mower
true colors
under-exploited
unvexatious
vector magnetometer
velveted
void decks
weather radar scanner
wine, women, and song