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(330) / 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(299) / 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(153) / 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(156) / 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(118) / 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(104) / 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(146) / 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(149) / 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(161) / 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(143) / 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(178) / 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(147) / 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(135) / 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(127) / 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(152) / 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(175) / 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(162) / 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(134) / 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(130) / 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(130) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
aari
AC in connector
actorvist
acute toxic cerebropathy
alo
ancistrum
assembling on board
autumn timber
azel-scope
azimuth setting knob
bismuth tribromophenate
bolt tightner
brainstormings
bubble-brained
carriage below deck
cavity configuration
Chahārcheshmeh
chat away
Cleopatra Needle
cloth doubler
contrct
cross-flow of air
Ctrl V
cull out
Cysternaviridae
dakhala
decision-table
Dewar Vacuum flask
drumming cell
eckhardts
effect of additive
electromagnetic pulse (emp)
endogenous heat production
engage upon
epitrimerus englerus
externally oriented economy
fastness to gas fumes
fibrous adhesions
first-aid cabinet
fixed royalty
freezing-drying microtomy
get the job done
give up a business
grumbling
high street bank
honnd's-tongue
hydraulic spinner
hypericum tetrapterums
icing door
infrared phosphor
insulanoline
knock the tar out of
Kwilecki's method
lanternbattery
liquidity diversification
medicine chest
mesodermal maintenance
microclimatologic
multichannel access
my heart bleeds for
ncci
nehela
northern pickerel
nuclear-thermal rockets
OAGIS
ockerdom
onebedroom
parameter region
Pavawol
Pentecostal Church
perflubrodec
phosphate pigment
pinnaspis hibisci
pleura visceralis
point of pouring
preferred orientation
prelanding operations
preselected barrage point
prodromal
Quntalan
radio-range station
relative cost
repulpator
Ricci, Matteo
self-compatibility
semipermanent store
shock(-wave) speed
show one's heels
slurry spreader
specific natality
spoke volumes for
sporebearer
squirting cucumbers
stem base
tabular representation
That Phanom
tipranavir
under-kind
undust
vachery
want out (of)
wood drakes