单词:inhalation of silica particles
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A major police operation is underway in Sydney's inner west. A number of streets have been blocked off around the Chinese consulate in Camperdown. It follows reports of a robbery in the area. Gunshots were heard early this morning and it's believed o
OK, today we're going to talk about the mole. 今天我们来谈一下摩尔。 Now, I know what you're thinking: I know what a mole is, 我知道你现在在想:我知道摩尔是什么, it's a small furry creature that digs holes in the ground
Big City Killer If the cigarettes don't get 1 you the traffic pollution will. Up to a fifth of all lung cancer deaths in cities are caused by tiny particles of pollution, most of them from vehicle exh
Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,
本期对白是上期的继续。Michael和Tancredi医生在天花板上的狭窄通道里停下来休息。医生问Michael怎么会知道如何到达病区的。Michael找借口敷衍。 [00:07.49]Listen and Share [00:44.69]Michael [00:45.46]Tancredi [00:50.56]Michael [00:57.95]Why are You here? [00
This is Scientific American's 60-Second Science, I'm Steve Mirsky, got a minute? Every Star Trek fan knows theres matter and antimatter, but why is there apparently so much more matter than antimatter?Scientific American's JR Minkel: Two recent exp
1. A fast-burning fire destroyed most of the cargo section in Istanbul's International Airport. Thousands of people had to be evacuated. Three suffered smoke inhalation . Authorities have rule d out t
1. South Carolina Coroner's Office says a combination of smoke inhalation and burns killed the nine firefighters inside a burning furniture store in Charleston. They died after the roof collapsed on top of them. Investigators say arson is not suspec
SCIENCE IN THE NEWS - December 10, 2002: Snow By George Grow VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with SCIENCE IN THE NEWS, a VOA Special English program about recent dev
FAITH LAPIDUS: This is SCIENCE IN THE NEWS, in VOA Special English. Im Faith Lapidus. BOB DOUGHTY: And Im Bob Doughty. Today, we will tell you everything you wanted to know about snow. (MUSIC) FAITH LAPIDUS: Winter has returned to northern parts of t
AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be
Study: Upper-Atmosphere Particles Slow Pace of Global Warming A recent study finds tiny particles suspended high in Earths atmosphere are having a greater impact on global climate than previously believed. The airborne particles, known as aerosols, a
SCIENCE IN THE NEWS - Winter Cold: Everything You Ever Wanted to Know About SnowBy George Grow Broadcast: Tuesday, January 10, 2006 (MUSIC) VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob D
AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin
A fire started in the engine of a truck, 100m deep in a gold mine in Waihi at 5am this morning. Twenty-eight men were working in the mine at the time, some of them 300m underground. They immediately went to a safety chamber which is a large metal she
BEIJING, Jan. 29 (Xinhua) -- Thirty percent of official cars in Beijing should not be used when there is extremely bad pollution, traffic authorities confirmed Tuesday. The order was implemented on Monday evening to help combat the fourth round of he
If you thought Russia's recent efforts to prevent rain in the sky from dampening holiday spirits represented the ultimate in scientific stage management, you ain't seen nothing yet. 如果你认为俄罗斯最近为了阻止雨水毁掉节日氛围的努
Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. Or, in other words, we sneeze. Because the nose lining tends to swell when we lie down, making it even more sensitive to sneeze-causing particles,
Certainly there is no shortage of energy in the world above our heads. One thunderstorm, it has been calculated, can contain an amount of energy equivalent to four days' use of electricity for the whole United States. In the right conditions, storm c