磷和氮吸收

初级英语听力(新版) Lesson17 What's the postage on these letters to Thailand, please? I'll have to check. Do you need anything else? Yes. A three pence stamp, please. That'll be eighty-five pence in all. I wish you wouldn't have your TV so lou

发表于:2018-12-01 / 阅读(202) / 评论(0) 分类 初级英语听力新版

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(107) / 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(96) / 评论(0) 分类 2018年NPR美国国家公共电台2月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. The Chesapeake Bay could get helped by a new antipollution expert: farmed oysters. For decades, the Chesapeake has been plagued by excess nutrients, such

发表于:2018-12-24 / 阅读(120) / 评论(0) 分类 Scientific American(一)月

AGRICULTURE REPORT - Bird Flu: Composting the Remains of Farm BirdsBy Mario Ritter Broadcast: Tuesday, February 28, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Farmers usuall

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 2006年慢速英语(二)月

Broadcast: June 4, 2003 By Paul Thompson VOICE ONE: This is Ray Freeman. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today, we tell about how astronauts prepa

发表于:2019-01-02 / 阅读(129) / 评论(0) 分类 VOA2003(上)-科技导航

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

发表于:2019-01-08 / 阅读(170) / 评论(0) 分类 Scientific American(九)月

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(132) / 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(163) / 评论(0) 分类 VOA慢速英语2008年(八)月

'Take' Is a Building Block in English Now, the weekly program Words and Their Stories from VOA Learning English. On this program, we explore the history and usage of common expressions in American English. And we give examples so that you can learn t

发表于:2019-01-12 / 阅读(324) / 评论(0) 分类 2016年VOA慢速英语(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(138) / 评论(0) 分类 2007年VOA标准英语(七月)

Fukushima Plant Operator: Nitrogen Pumping Operation Going Well A plan to inject nitrogen into the containment vessel around reactor 1 at the Fukushima Daiichi power plant appears to be working, the plant owner said Thursday. Higher pressure levels h

发表于:2019-01-14 / 阅读(125) / 评论(0) 分类 VOA标准英语2011年(四月)

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(125) / 评论(0) 分类 2018年NPR美国国家公共电台7月

托福考试(TOEFL)是国际上最有影响力,使用最广泛的的英语水平测试之一。托福除了作为美国主流学校入学所需的标准化考试,申请签证和工作的过程中也会有需要托福成绩的机会,所以不少

发表于:2019-01-18 / 阅读(105) / 评论(0) 分类 托福英语

The geology of the planet 地球的地质情况 Welcome to the Anthropocene 欢迎来到人类纪 Humans have changed the way the world works. Now they have to change the way they think about it, too 人类改变了世界运行方式,现在,人类不

发表于:2019-01-26 / 阅读(152) / 评论(0) 分类 经济学人综合

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(117) / 评论(0) 分类 万物简史

AGRICULTURE REPORT — November 26, 2002: Corn, Part 1 By Mario Ritter This is the VOA Special English Agriculture Report. Corn is an important crop in many parts of the world. However, some people ar

发表于:2019-01-30 / 阅读(134) / 评论(0) 分类 农业与发展

GRE阅读复备考之类比思维。考生在做gre阅读复习过程中也可以运用类比的思维解题。在GRE阅读中绝对不少见,也就是常说的类比题。主要说下述哪一选项所述现象和原文第N行的说法比较相像

发表于:2019-02-17 / 阅读(112) / 评论(0) 分类 GRE英语

1.Above all:最重要的是,most important of all Above all, theyll have to discover how much nitrogen it possesses since nitrogen is4/5 of the air breathe.(2002-1) 2.Account for:解释。说明 How do you account for the truth? 3.After

发表于:2019-02-18 / 阅读(92) / 评论(0) 分类 大学四六级阅读

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(118) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
abandoned instigation
accelerated amortization methods
air line main
approximate equivalent circuit
araignee lace
arbitration convention
Arviat
atomic radius
axial compressor
babesiasis, babesiosis
baccara
baloches
be moved
bedizened
brass Brayton cycle
Bybintsy
carve a career for oneself
center of gravity (cg)
centralisation
cirriform
communication section
continuous autofocus
control valve spring
convergement
cosmochlore (ureyite)
craised
cuddler
doughbird
eccentric jaw relation
effective molecular weight
explosion proof motor
face fuck
fascs
female-tease
fibre configuration
file allocation time
foot-flat
fuckbuckets
fueling gear
genus Tyrannus
Goschen Str.
Greek architecture
gyrineum roseum
halogen-quench Geiger tube
Herniaria caucasica
high speed exciter
HL (hot line)
hydraulic excavation
hydrovacuum
ilex rotunda var. microcarpa(lindl.ex pax) s.y.hu
interval dividing technique
Juania
limberer
link-loading machine
magnetic tape recording current-meter
Marchwood
material returned report
moderate protective duty
motanic acid
Moulmein(Mawlamyine)
Mouriès
munstral
neuroneme
night transparency
oblique reinforcement
ofcourse
overlength charges
panstick
peptide antibiotics
Persian pottery
piercer roll
play down to someone
populationist
Port Allen
Porto Ferrajo
quasi-stable population
re-interpreting
relentless
resistivity anisotropy
shave excision
Sitakili
sound transmission loss
soundpost
stall performance
start-up boiler house
sterling foreign currency bond
Stipa tianschanica
supplexion
Tanacetum parthenium
taperless
tear jerking
thrombocytopathic
tindern
tissue conduction
Torrejón el Rubio
track resistor
uk -let
variable design point method
Vena thoracodorsalis
vendeen
water-gate valve
weitzman