生物防治法

For nearly 130 years, the worlds scientists have used a singular small, metal cylinder to define the exact weight of a kilogram. But that is about to change. The cylinder was made in 1889 of platinum and iridium metals. It is called the Grand K. The

发表于:2018-12-08 / 阅读(140) / 评论(0) 分类 2018年VOA慢速英语(十一)月

By Carol Pearson Washington 28 February 2007 watch Antibiotic Resistance report Penicillin and Erythromycin are examples of antibiotics that used to be one-time miracle cures. These drugs and other antibiotics are now less effective because bacteria

发表于:2018-12-16 / 阅读(168) / 评论(0) 分类 2007年VOA标准英语(二月)

STEVE INSKEEP, HOST: This year Americans will spend more than $2 billion on probiotics, supplements aimed at boosting what are called good bacteria inside us. One part of the market that's growing rapidly is probiotics for babies and kids. Here's NPR

发表于:2018-12-17 / 阅读(151) / 评论(0) 分类 2018年NPR美国国家公共电台5月

[ti:] [ar:] [al:] [by:] [00:01.19] Love Without Measure 无条件的爱 [00:05.89]Freda Bright says,Only in opera do people die of love. [00:11.69]Its true. You really cant love somebody to death. [00:16.17]Ive known people to die from no love, [00:1

发表于:2018-12-26 / 阅读(176) / 评论(0) 分类 温馨夜读

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 arm [ B:m ] He received a call to arms

发表于:2018-12-30 / 阅读(210) / 评论(0) 分类 每日攻克5词

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 measure [ 5meVE ] Please measure me fo

发表于:2018-12-30 / 阅读(240) / 评论(0) 分类 每日攻克5词

Love without measure Freda Bright says,Only in opera do people die for love. It's true. You really can't love somebody to death. I've known people to die from no love, but I've never known anyone to be loved to death. We just can't love one another e

发表于:2019-01-02 / 阅读(147) / 评论(0) 分类 每天一点英文

Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if its not the rain that makes the forestswhat if its the forests that actually generate the rain? Thats the contention of a paper in BioScience

发表于:2019-01-02 / 阅读(222) / 评论(0) 分类 60秒科学

Each year, millions of students complete their study programs at the colleges and universities across the United States. The new graduates receive an official piece of paper from their schools. This paper is known as their degree. It states what kind

发表于:2019-01-02 / 阅读(247) / 评论(0) 分类 2017年VOA慢速英语(四)月

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(183) / 评论(0) 分类 Scientific American(五)月

ROBERT SIEGEL, HOST: Now some good news, especially for babies around the world. Scientists in the U.S. and India have found an inexpensive treatment for a common infection. It could save hundreds of thousands of newborns each year. The treatment com

发表于:2019-01-16 / 阅读(192) / 评论(0) 分类 2017年NPR美国国家公共电台8月

RACHEL MARTIN, HOST: Go online, walk through any health store or supermarket, and you'll find all kinds of products being sold as probiotics. They're being promoted for all kinds of things - preventing upset stomachs, boosting the immune system, figh

发表于:2019-01-16 / 阅读(163) / 评论(0) 分类 2017年NPR美国国家公共电台12月

The title of today's lesson is You Cant Improve What you Dont Measure 今天的话题是有评价才有提高。 The old adage Measure twice and cut once is practical advice for everyone, especially carpet layers, tailors, and carpenters. 老话说得好

发表于:2019-01-18 / 阅读(181) / 评论(0) 分类 生活英语听力文章

Grammar Girl here. Today's topic is units of measurethose words and symbols that come after numbers. This first point might seem self-evident: you put a space between the number and the unit of measure. Even though it seems obvious, I'm telling you b

发表于:2019-01-30 / 阅读(183) / 评论(0) 分类 英语语法 Grammar Girl

By Deborah Tate Washington 20 September 2007 Legislation to regulate U.S. troop deployment cycles in Iraq was blocked in the U.S. Senate late Wednesday by Republican opponents who argued the measure could undermine the war effort. The action was a bl

发表于:2019-01-31 / 阅读(193) / 评论(0) 分类 2007年VOA标准英语(九月)

Probiotic yoghurt drinks and supplements dont live up to their promises, according to an EU watchdog. They claim to boost your immune system and help digestion. It concluded there is no scientific proof that products such as Yakult have any health be

发表于:2019-02-04 / 阅读(164) / 评论(0) 分类 阅读空间

WASHINGTON, March 19 (Xinhua) -- U.S. Senate Majority Leader Harry Reid said Tuesday he would not include a renewal of the federal assault weapons ban in a package of gun reform legislation to be introduced in the Senate, which signals the measure st

发表于:2019-02-08 / 阅读(228) / 评论(0) 分类 英语新闻

By Dan Robinson Capitol Hill 14 November 2007 On Capitol Hill, another fierce debate is underway about the war in Iraq, as the Democratic-controlled House of Representatives considers a measure to provide $50 billion in short-term funding for U.S. mi

发表于:2019-02-11 / 阅读(331) / 评论(0) 分类 VOA常速英语2007年(十一月)

4 Ways to Measure Your Standard of Living Standard of living should not equate to amount of spending. When I sat down to write an article on the countries with the highest standard of living, I thought it would be easy. But, how do you define standar

发表于:2019-02-18 / 阅读(242) / 评论(0) 分类 阅读空间

By Dan Robinson Capitol Hill 14 March 2008 The U.S. House of Representatives has approved a Democrat-crafted foreign intelligence surveillance law that contains provisions strongly opposed by President Bush. VOA's Dan Robinson reports from Capitol Hi

发表于:2019-02-20 / 阅读(285) / 评论(0) 分类 VOA标准英语2008年(三月)
学英语单词
Abū Fulah
adnasal
after-years
aggregate indebtedness
air bladder
AMSH
anterior uveitis
area of injection orifice
authentic movement
best case scenario
blending bin
book cabinet
brewice
canonical fundamental system
carvacrotinic acid
christianite
cladistic analyses
continuous X-ray
controlled-effects nuclear weapon
current division ratio
cut-off radiation
dactylene
decuss
Djoku Punda
drosal part
Eisendorf
electrocapilary
email clients
Eria yanshanensis
finger jam
genus arethusas
goded
Grosswetterlage
gynophores
hard technology
Hemopad
horizontal-pitman crusher
intrafolial fold
invariant boundary
isolated viscus irrigation
justman
Kanzwe
keel gradient
labour expenditure
light fuels
low power range system
Lysimachia rubiginosa
magnetically tuned filter
make a man out of
man-seat separation system (msss)
manual boring
metallic magnetic tape
methanogenic organism
Middle Mariana Ridge
minimum point
Mnason
net operating time
not otherwise rated
off transition time
once-radical
outdreamt
overfloating
Oxytropis trichosphaera
parastigmatic pores
periplasmically
perobrachius
philadelphia-based
photoelectric system
physiopathologically
primary sodium auxiliary system
probability of death
program budget
quality of oral speech
roasting in air
septic inflammation
serial discounts
sericitic sandstone
settling accelerator
shipbuilding depression
shooting boxes
shovals
Sindacon
Sirai
stearate acid
subject ship being free
sublimed method
Super/subscript
suspension insulator
Tasian
the activities
theory of optimization
theory of transmission lines
thermal insulating cement
Trinitron
true croup
tucutucu
underworkings
war whoop
watanuki
water vaporizer
woz ere
xestoleberis monyui