氮指数

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(152) / 评论(0) 分类 初级英语听力新版

You probably already know everything is made up of little tiny things called atoms 你也许已经知道所有的东西都是由微小的原子组成。 You might even know that each atom is made up of even smaller particles called protons, neutrons

发表于:2018-12-08 / 阅读(57) / 评论(0) 分类 TED演讲教育篇

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(58) / 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(65) / 评论(0) 分类 2006年慢速英语(二)月

AGRICULTURE REPORT - Legumes: Good for People and SoilBy Bob Bowen Broadcast: Tuesday, February 21, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Many different kinds of plants

发表于:2019-01-02 / 阅读(49) / 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(76) / 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(105) / 评论(0) 分类 Scientific American(九)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. If youve ever wondered where the Earth came from, the answer, it seems, is blowin in the windthe solar wind. Or so say scientists who, after examining sola

发表于:2019-01-08 / 阅读(93) / 评论(0) 分类 Scientific American(七)月

This is the VOA Special English Agriculture Report. Sorghum farmers in eastern Uganda, working with scientists, have tested some lower-cost ways to improve their soil. Little rain and poor soil fertility are problems in that area, as in other parts

发表于:2019-01-11 / 阅读(83) / 评论(0) 分类 VOA慢速英语2007年(六)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(76) / 评论(0) 分类 VOA标准英语2011年(四月)

The ice bucket challenge may seem cool if you live in a place which is usually quite hot, but for those who dwell in a cold climate the idea is probably less impressive. 冰桶挑战看起来相当酷,但前提是你处在热带地区。而对于那些

发表于:2019-01-16 / 阅读(64) / 评论(0) 分类 英语新闻

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(68) / 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(98) / 评论(0) 分类 经济学人综合

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(84) / 评论(0) 分类 农业与发展

1. It is one of natures great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plants leaves are bathed in a sea of nitrogen gas.(3+)下述情形真可谓是自然界的一个莫大讽

发表于:2019-02-01 / 阅读(52) / 评论(0) 分类 GRE英语

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(62) / 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(50) / 评论(0) 分类 大学四六级阅读

LOS ANGELES, March 6 (Xinhua) -- U.S. researchers have successfully used certain microbes to produce biofuels(生物燃料), opening a door to developing cheaper green energy. The discovery was made by researchers at the University of California, Los

发表于:2019-02-18 / 阅读(53) / 评论(0) 分类 英语新闻

In the days of diving suitsthe sort that were connected to the surface by long hoses, 在使用潜水衣即用长管子连接水面的那种装备的年代, divers sometimes experienced a dreaded phenomenon known as the squeeze. 潜水员有时候会

发表于:2019-02-25 / 阅读(53) / 评论(0) 分类 万物简史

However, when at length they emerged into the fresh air of a London evening, 然而,当他们最后走进伦敦夜晚的新鲜空气里的时候, the bubbles sprang instantly to fizziness, memorably enlivening the digestive process. 气泡立刻泛

发表于:2019-02-25 / 阅读(54) / 评论(0) 分类 万物简史
学英语单词
Alcolea de Calatrava
arctictiss
automatic backwashing type oil filter
auxiliary kiln drive
b.i.t
bein'
bercea
Beta-D-Fructopyranose
breiman
burweeds
cartoning sealing machine
chavviest
Chrococcus
ci type
COD (commercial operation date)
coffee culture
colitoxicosis
column formation
compacted cinder fill
compressive nappe
computer graphics system
connecting-rod
copicide
Cosustea
cytoplasm canaliculi
Dendi
Dorminal
electronic test socket
elektroes
fence sth in
fixed claw
fixed quotas for revenues and expenditures
flexible auger
flexible lightguide
flomerics
friction-ball
front - end load
front upthrow cam
Furnace Branch
galeorhinus zyopteruss
gastric surgery
get into bad company
goldemberg
greenstreet
Herisau
highly regarded
Hopi-Navajo Indian Reservation
hurriednesses
image fog
imperfect cleavage
infrastructure security layer
international banking
isobaric expansion
isolated organ perfusion
Italian red
laws of motion
long - distance race
losacco
maigaris
malhams
marketing paradigm
meidle
minehunters
mint ratio
moral-political
moxifloxacin
neutralizing device
NTBC
overall target
pancake days
Papakura
Pappenheim's stain
Pechora Sea
phosphate bridge
physiological acidtity
principle of corresponding state
programmed stop
Pycazide
ram pressing
regelated
Rev.
rough cutter
sarka
schizolachnus orientalis
shoran bombing
species ecology
speechlike
spray sticker
stand mat
statistics of capital construction
Sud, Rég.du
superficial circumflex iliac vein
tendinous cord
The still sow eats the wash .
total paid in capital
triode clamping
Turkifies
TV in a window
underemphasizes
unified model of nucleus
upright aircraft
winding plant