测定土壤中有效磷

[00:09.98]北京奥运28大项 [00:30.84]参与,竞争,分享,进步 [00:48.19]Athletics 田径 [00:54.69]VERTICAL JUMPS 跳高 [01:00.71]An athlete may commence jumping/vaulting [01:03.86]at any height previously announced by the Chief Judge [01:07.38]and may jum

发表于:2018-12-05 / 阅读(309) / 评论(0) 分类 奥运28大项比赛

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-05 / 阅读(283) / 评论(0) 分类 商业服务英语

By Gary Garriott Broadcast: July 29, 2003 This is Bill White with the VOA Special English Agriculture Report. Soil conservation efforts protect soil from wind and water that can blow or wash it away.

发表于:2018-12-07 / 阅读(131) / 评论(0) 分类 VOA2003(下)-农业与经济

The English word foot has more than one meaning. In the United States, one meaning is a unit of measurement equal to 12 inches, or .3 meters. We use feet to measure height, length and short distances. Todays question is about when to use the plural o

发表于:2018-12-16 / 阅读(131) / 评论(0) 分类 2018年VOA慢速英语(十)月

The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松(松树)制成, 在液体的石蜡

发表于:2018-12-18 / 阅读(96) / 评论(0) 分类 英国学生科学读本

Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢

发表于:2018-12-18 / 阅读(89) / 评论(0) 分类 2018年NPR美国国家公共电台2月

This is Scientific American's 60-Second Science. I'm John Matson. Got a minute? In a laboratory vault outside Paris is a small cylinder of platinumiridium alloy that serves as the standard for all mass measurements worldwide. By an 1889 international

发表于:2018-12-24 / 阅读(121) / 评论(0) 分类 Scientific American(一)月

EDUCATION REPORT - Students Face New Worry: Wrongly Scored College-Entry TestsBy Nancy Steinbach Broadcast: Thursday, March 30, 2006 I'm Steve Ember with the VOA Special English Education Report. Abou

发表于:2019-01-02 / 阅读(134) / 评论(0) 分类 2006年慢速英语(三)月

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(139) / 评论(0) 分类 VOA2004(上)--各类新闻

This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R

发表于:2019-01-08 / 阅读(125) / 评论(0) 分类 Scientific American(十二)月

This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that

发表于:2019-01-11 / 阅读(152) / 评论(0) 分类 VOA慢速英语2008年(八)月

By Peter Fedynsky Moscow 18 July 2007 Officials in Ukraine are assessing the damage of a train crash in western Ukraine that sent huge clouds of burning phosphorus billowing into the air. The accident, which took place Monday, is raising health conce

发表于:2019-01-12 / 阅读(133) / 评论(0) 分类 2007年VOA标准英语(七月)

MARY LOUISE KELLY, HOST: Summertime brings algae blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten w

发表于:2019-01-17 / 阅读(119) / 评论(0) 分类 2018年NPR美国国家公共电台7月

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(108) / 评论(0) 分类 万物简史

A man of the state of Zheng wanted to buy a pair of shoes.He measured his feet and put the measurement on a chair.When he set out for the market he forgot to bring it along.It was after he had found the pair he wanted that this occurred to him.

发表于:2019-01-30 / 阅读(135) / 评论(0) 分类 趣味英语

A chef has created an off the scale chicken dish so spicy he claims it can cause facial paralysis. 一名厨师发明了一种超级辣的鸡肉菜肴,他宣称这道菜会让食客辣到面瘫。 图片1 Muhammad Karim, 34, has to wear a gas mask

发表于:2019-02-05 / 阅读(158) / 评论(0) 分类 英语新闻

In the state of Chu there was a man skilled in physiognomy.His comments were very accurate and his fame spread through the state.King Zhuang sent for him and asked him the secret of his success.Sire,said the man,I am not good at judging cha

发表于:2019-02-06 / 阅读(141) / 评论(0) 分类 趣味英语

船务术语汇总 BAF (Bunker Adjustment Factor) 燃油附加费 CAF (Currency Adjustment Factor) 货币贬值附加费 YAS (Yard Surcharges)码头附加费 EPS (Equipment Position Surcharges) 设备位置附加费 DDC (Destination

发表于:2019-02-11 / 阅读(110) / 评论(0) 分类 实用英语

Joining me now from Santa Barbara, California, to talk about Mr. Trump's first 14 weeks on the job is NewsHour Weekend special correspondent, Jeff Greenfield. Jeff, it's good to see you. So here we are, 100 days in. But you've said on this program an

发表于:2019-02-25 / 阅读(111) / 评论(0) 分类 PBS访谈社会系列

Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche

发表于:2019-02-26 / 阅读(113) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
20s
abolitionist
acquired keratoderma
actinographs
anus disease
asset deflation
automatic ringing
automatic volume expander
biramous appendage
Bnms's glucose medium
boldface attribute
calling by
central computer input/out-put
christen
colummae carneae
combined closure method
complete tree
comprende
Comte de Rochambeau
conkerberries
constructedness
Dennis Potter
depolarizing electrode
dihydropyrane
discrete normal distribution
dismountable device
dual temperature exchange
dynacire
echinococciasis of liver
embourgeoisiement
Emmaste
for a moment
Funaydiq
Garnotia
gastronom
geo2-sio2 glasses
handle with care
Hardgrass
hazard reducing device
heel push fit
hexagonal pyramid of third order
hide options
hydraulic hitch system with separated units
immature sediment
LDT
looked
maho
main drive gear bearing cap
maintenance directory
mean solar days
Mercator, Gerhardus
Mission City
Mlicrococcus minuta
munida psamathe
musculoskeletal
notification on formal insufficiencies
Novobirilyussy
officerial
official short term credit
ooxanthine
Parasalicil
percent of idle time to utilization of time
pheniramine maleate
phytotrone
pipeline module
polar desert
principal tensile stress
process for separation of C4 by formation of MTBE
product-line profit and loss statement
progenitrices
ptilosis
pyrvinium pamoate
racquet
release-free relay
rhizoma serpentariae
roda
roentgenoscopy
salicyloacetylsalicylic acid
semiconductor filament
set-up scale instrument
sexism
single-sex college
SMA-12
sports-psychology
stand by you
subepithelium
summersweets
syncronising
Tautogolabrus
tetramethyl-ethylene
thermal sensitive effect
timelikeness
Tob-adonijah
tomog
track jack
triquetrals
unsuffocated
variable-mu pressure transducer
Vienne River
waterworks operation
welding station
zone of mild pollution