标签：Detectors 相关文章
The West Bank is littered with landmines and unexploded ordnance, due to decades of conflict beginning as far back as 1948. A survey conducted in 2012 identified 90 minefields. Of these, 13 were laid by the Jordanian military between 1948 and 1967. T
VOA标准英语2017年(11月)
Gamma Ray Observatory to Open Soon in Mexico 墨西哥建造伽马射线天文台即将开放 American and Mexican scientists have completed construction of the world's largest gamma ray observatory, situated high in central Mexicos Sierra Negra Moun
VOA标准英语2015年(四月)
文本： Crack detectors work by sound. If you get two good eggs and just tap them together, you get a nice ringing noise if its good or a dull noise if its broken. And on the machines, youve got sensors and they touch the egg 16 times, each egg. An
跟着英剧练发音
It seemed like an ideal afternoon for a walk on the beach. The sky was blue, the breeze was warm, and the ocean was calm and peaceful. The only thing that kept it from being perfect was the mess the storm had left behind. Yuck, more seaweed! six-year
70 The Mystery of the Pirate's
训练有素狗狗或检测出前列腺癌 Cancer of the prostate gland is one of the leading types of cancers affecting men in their 60s. 前列腺癌是男性60多岁会患上的一种主要癌症。 According to the World Cancer Research Fund Inte
VOA标准英语2015年(十二月)
We wanna bring NBC chief science and health correspondent Robert Bazell. Bob, it's not just the Japanese people affected by the radiation. We had the Pentagon report that our aircraft carriers, the one that Richard was just talking about the Ronald R
万花筒2011年
I had to fly from Minneapolis to Los Angeles recently, and like most travelers, I've almost memorized the standard safety announcement made by the flight attendants. It goes something like this: Good afternoon and welcome to Flight 345, service to Lo
地道美语播客
By Margaret Besheer Erbil, Iraq 25 June 2006 Nearly three million Iraqis are at risk each day from landmines and other unexploded bombs and munitions from conflicts past and present. By some estimates, as many as 20 million landmines are buried acro
2006年VOA标准英语（六月）
South Sudan Hopes New Mining Law Will Unearth Treasures This gold mine in Nanakanak, Eastern Equatoria state, is just one of many spots across South Sudans east where a gold rush has hit. Adele Natogo said that like countless others, she left her nin
VOA标准英语2013年(六月)
Scientists Looking at Coldest Objects in Universe 寻找宇宙中最冷的物体 Astronomers have a new powerful tool for looking deep into space while trying to better understand the origins of the universe. It is a new telescope that will look for
VOA标准英语2014年(六月)
喀麦隆欢迎美国派遣军队 Boko Haram has killed about 400 civilians in northern Cameroon since last year. The group's brazen attacks in recent months have led the government to beef up its military presence in the region with backing from Cha
VOA标准英语2016年(一月)
Fukushima Uses UN Conference to Promote Its Food Safety 福岛向来访者力证食品安全 FUKUSHIMA, JAPAN In the shadow of northern Japans snow-capped mountains, Kazuhiro Watanabes strawberries are plump and ready for picking; because of his adva
VOA标准英语2015年(三月)
Australian Scientists Confirm Existence of Element 117 澳大利亚科学家证实117号元素的存在 Most of the naturally-occurring elements have already been discovered, but that does not mean that new elements cannot be created - only that they
VOA标准英语2014年(五月)
MARY LOUISE KELLY, HOST: For the first time, scientists have seen the violent collision of two neutron stars. They've watched as heavy elements like gold, platinum and uranium were forged. This cosmic smashup is being hailed as one of the biggest eve
2017年NPR美国国家公共电台10月
JENNIFER LUDDEN, HOST: It's been a depressing week of back-to-school stories - parents buying bulletproof backpacks, schools installing panic buttons and classroom trauma kits. Some teachers in Waco kicked off the year with an active-shooter drill th
2018年NPR美国国家公共电台8月
China launches its first X-ray space telescope to observe black holes, pulsars and gamma-ray bursts, via a Long March-4B rocket from Jiuquan Satellite Launch Center in northwest China's Gobi Desert on June 15, 2017. [Photo: thepaper.cn] China launche
2017CRI中国国际广播电台
The loss of the magnetic field has a catastrophic impact on the planet's evolution. Mars becomes the red planet we see today. If earths magnetic protection continues to fade, would it suffer the same fate? If it vanishes completely, the planet might
自然百科2011年
Several countries in Africa say they are increasing security at their airports following the Christmas Day bombing attempt on a US airliner by a Nigerian man. Other countries say they have no plans for upgrades, but are monitoring the situation. Scot
VOA标准英语2010年(一月)
As everything from tooth brushes to tractors grows more connected, the phenomenon is spreading to other industries. 现在，从牙刷到拖拉机都充满了连接，这个现象已经扩展到了其他领域。 The latest iterations gather mounds o
经济学人商业系列
The Beijing Hour Morning Edition Shane Bigham with you on this Monday, July 24th, 2017 Welcome to the Beijing Hour, coming to you live from the Chinese capital. Our news focus this morning... violence and insecurity in the Middle East... including an
The Beijing Hour 新闻纵贯线