质量的相对论性变化

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(139) / 评论(0) 分类 2018年VOA慢速英语(十一)月

[00:02.70]Unit 20 New Frontiers [00:06.15]Lesson 3 Scientific Breakthroughs [00:10.11]PIONEERS OF SCIENCE [00:12.16]In the summer of 1905, [00:14.40]a young man was sitting at home [00:15.97]after a day's work. [00:18.04]While rocking his one-year-ol

发表于:2018-12-13 / 阅读(250) / 评论(0) 分类 北师大版高中英语模块7(选修)

Stand Clear Of The Doors: TV Finally Gets On Board With Mass Transit play pause stop mute unmute max volume 00:0003:47repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your F

发表于:2018-12-17 / 阅读(148) / 评论(0) 分类 2016年NPR美国国家公共电台12月

Dealing with a Mass Transit Strike Marge: Where have you been? You should have been home over two hours ago! Homer: Ive been trying to get home. Havent you been watching the news? The transportation workers union has voted to strike. There was a mass

发表于:2018-12-27 / 阅读(163) / 评论(0) 分类 2014年ESL之旅行交通购物

[00:03.31]Unit 9 Wheels Culture Corner [00:06.46]America on the wheel [00:09.00]Although the motor car was invented in 1889 [00:12.43]by a German man called Gottlieb Daimler, [00:15.48]it was an American man called Henry Ford [00:18.57]who created th

发表于:2018-12-29 / 阅读(266) / 评论(0) 分类 北师大版高中英语模块3

A gunman in Texas shot and killed 26 people in a church in the small community of Southerland Springs, Texas on Sunday. At least 20 people were injured in the shooting. Victims included children and the elderly. The suspected gunman is also dead. The

发表于:2019-01-03 / 阅读(196) / 评论(0) 分类 2017年VOA慢速英语(十一)月

Mass School Shootings Mostly in Small US Towns In the United States, mass school shootings are most likely to happen in small towns and suburban areas. One example is the shooting last week at a high school in Santa Fe, Texas. Ten people died in the

发表于:2019-01-03 / 阅读(218) / 评论(0) 分类 2018年VOA慢速英语(五)月

Pope Benedict XVI celebrated an open-air Mass on Monday for the sick at the shrine of Lourdes in southwest France. He urged the sick, whom he blessed during the service, to remember that dignity never abandons the sick person. Sabina Castelfranco ha

发表于:2019-01-07 / 阅读(158) / 评论(0) 分类 VOA标准英语2008年(九月)

By Nick Wadhams Nairobi 11 January 2008 Kenya's political opposition says mediation efforts with the government over Kenya's flawed December elections have collapsed and the opposition is now calling for mass rallies across the country next week. Nic

发表于:2019-01-13 / 阅读(187) / 评论(0) 分类 VOA标准英语2008年(一月)

Most Accurate Projection of Polar Ice Melt Produced to Date Measuring ice sheets is a tricky business. Over the last two decades, dozens of studies on ice loss have come up with conflicting results. Now, a global scientific team, reporting in the jou

发表于:2019-01-14 / 阅读(187) / 评论(0) 分类 VOA标准英语2012年(十二月)

DAVID GREENE, HOST: We now know that the man who killed 26 people in a tiny Texas church on Sunday had been court-martialed and discharged from the Air Force for assaulting his wife and child. And authorities say that Devin Patrick Kelley sent threat

发表于:2019-01-16 / 阅读(174) / 评论(0) 分类 2017年NPR美国国家公共电台11月

RACHEL MARTIN, HOST: Catholic dioceses across Pennsylvania are still dealing with the fallout from a grand jury report that came out recently alleging widespread childhood sexual abuse in the state. Virginia Alvino Young from member station WESA has

发表于:2019-01-17 / 阅读(205) / 评论(0) 分类 2018年NPR美国国家公共电台8月

MICHEL MARTIN, HOST: In Thousand Oaks, Calif., Wednesday, 12 people were killed in a Western-themed bar before the shooter is believed to have turned the gun on himself. It has become an all-too-common scene. According to Gun Violence Archive, an ind

发表于:2019-01-17 / 阅读(154) / 评论(0) 分类 2018年NPR美国国家公共电台11月

By Anjana Pasricha New Delhi 05 December 2007 There is a growing chorus of protest among international and local rights groups over the recent mass arrests of minority ethnic Tamils by Sri Lankan authorities. Anjana Pasricha has a report from New Del

发表于:2019-01-31 / 阅读(154) / 评论(0) 分类 VOA常速英语2007年(十二月)

By Sabina Castelfranco Valencia 09 July 2006 Pope Benedict XVI greets Spain's King Juan Carlos, left, and Queen Sofia, center, as he arrives to hold a Mass in Valencia, Spain, Sunday, July 9, 2006 Pope Benedict has ended a lightening visit to Spain

发表于:2019-01-31 / 阅读(190) / 评论(0) 分类 2006年VOA标准英语(七月)

By Gilbert da Costa Abuja 11 September 2006 Federal workers in Nigerian are bracing themselves for mass layoffs following a weekend announcement that some 15,000 workers are to be let go this month. Union officials are reacting angrily to the plan a

发表于:2019-01-31 / 阅读(262) / 评论(0) 分类 2006年VOA标准英语(九月)

By Barbara Schoetzau New York 20 April 2008 Pope Benedict XVI ended his six-day visit to the United States with a jubilant mass at the 57,000-seat Yankee Stadium. From VOA's New York Bureau, correspondent Barbara Schoetzau reports the leader of the w

发表于:2019-01-31 / 阅读(186) / 评论(0) 分类 VOA常速英语2008年(四月)

China opposes proliferation of weapons of mass destruction: FM spokesman BEIJING, Nov. 14 (Xinhua) -- China opposes the proliferation of weapons of mass destruction and their means of delivery, Foreign Ministry spokesman Hong Lei reiterated at a regu

发表于:2019-02-03 / 阅读(188) / 评论(0) 分类 英语新闻

By Scott Stearns Washington 11 January 2007 U.S. President George Bush is sending more troops to Iraq as part of what he says will be a new way forward. VOA White House Correspondent Scott Stearns looks at the president's changing approach to the co

发表于:2019-02-06 / 阅读(196) / 评论(0) 分类 2007年VOA标准英语(一月)

A mass rally and parade has been held in DPRK's capital a day after the Worker's Party wrapped up its first congress in 36 years. Hundreds of thousands of people were seen marching through the main ceremonial square. Participants in Pyongyang practic

发表于:2019-02-18 / 阅读(190) / 评论(0) 分类 cctv9英语新闻2016年
学英语单词
-fix
acetylene apparatus
ACPR (Annular Core Pulse reactor)
aerodynamic lift
Anrochte
Ansongo-Menaka, Réserve Partielle de Faune d'
atra
be like to do
benekes
benzyl halide
blackboard enamel
bonded-barrier phototransistor
climbing fuel
coining ram dimpling die
conventional error
curent audit
deindividualize
deion grid
dielectric(high frequency) drying
dithiodilactic acid
divergent evolution
dolphin type berth
emissarium mastoideum
engineering astronomy
eutrophyte
extraterrestrial solar radiation
fabric composite
flying pay
forty-spots
glanceable
global development
gluteus transplantation
Haemaphysalis leporis-paiustris
hamentasch
Hobyo
hot lunch
hot oil heating asphalt storage
hot-cathode type magnetron gauge
hotech
initX
inlet edge of impeller blade
intergrated tag-barge vessels
inveighs against
iris quartz
isolating condenser
junior miss
Kamui-misaki
light on
Lignerolle
loop unit
lunch-boxes
magnetic fossil
measor
member number
metal gutter
metatrochophore
middle lacerated foramen
multiple power series
mycoplasma-like organism
non-crystalline polymer
Novotroitskaya
old-talk
on-line /gb/ (adjective)
overlapping leaves
oxythane
palmate leaf
paraphasic
personal-growth
pollack whale
population phase
post-painter
potocytosis
prokininogenase
pump-priming
recompensed
reconstructs
recruitment postponement
resacralizing
Ritisch's suture
runtime version
saturation patrols
Sedum fui
senesthopathia
setting percentage
simcoe, lake
small-scale inorganic qualitative analysis
space angle
steering-wheel puller
stickweeds
strangthen
stress-relief heat-treatment
supercivilized
symbolic differential equation
Tbilisian
tea cream
Telosma procumbens
toxicodendron vernicifluums
ultimate frisbees
vertugal
walls up
Woking
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