单词：activated biological filtration process
单词：activated biological filtration process 相关文章
Beijing will launch a pilot program to equip schools and kindergartens with air filtration devices. Smog has been a significant issue in the Chinese capital this winter. I was coughing just now, I always wear mask, from school to home. The air is cho
2017CRI中国国际广播电台
Yal: Hey Don, whatcha reading? Don? Don! Don: Huh? Y: I asked what book you're reading. D: Oh, sorry. I guess I was lost in the story. Y: That's OK. That's what a good story will do, right? In fact, there's a study that explains what's going on the b
大千世界
Broadcast: Jan 10 2003 The Pentagon has issued a statement 2) asserting the military is prepared to protect its personnel from possible biological weapons attack. On the surface, the Pentagon's assert
VOA2003（上）-健康之旅
This is Scientific American's 60-Second Science. I'm Christie Nicholson . Got a minute? The lure of gambling clearly comes from the chance of winning. But how exciting is it to almost win? A study in the February 12th issue of the journal Neuron look
Scientific American(二)月
By Lisa Schlein Geneva 20 November 2006 U.N. Secretary-General Kofi Annan is urging nations to do more to combat biological weapons, and to create global safeguards to keep them out of terrorist hands. Kofi Annan at a review conference on Biological
2006年VOA标准英语（十一月)
Over 27-hundred volunteers, dubbed the New Generation at the Bird's Nest, are activated among different posts at the IAAF Championships. Xie Junyan heads a group of 72 volunteers. His team is dealing with security. Our volunteers are here as an impor
英语新闻
AGRICULTURE REPORT - Biological Controls, Part 1 By Mario Ritter Broadcast: Tuesday, April 13, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Biological controls are living
农业与发展
Breaking up is hard to do. Whether youre doing the dumping or getting dumped, chances are you feel pretty upset. And theres a scientific explanation for this. 分手确实是件难事。无论是你甩了对方，还是对方甩了你，你都可能感
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By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica
2007年VOA标准英语（五月）
UNITED NATIONS, April 15 (Xinhua) -- A new polio vaccine will be rolled out next week to replace the one which protects against all three strains of wild poliovirus. It marked the beginning of the largest and fastest globally coordinated rollout of a
英语新闻
RIO DE JANEIRO, March 5 (Xinhua) -- The Corinthians coaching staff dedicded to bar striker Adriano from the team's upcoming Libertadores Cup match on Monday. The decision comes one day after the player's lackluster performance in the 1-0 loss to Sant
英语新闻
BOGOTA, May 2 (Xinhua) -- Colombia's second largest guerrilla group blasted a main oil pipeline on Friday, causing oil spill in the northeastern region, local media reported. The rebel National Liberation Army (ELN) attacked the Cano Limon-Covenas pi
英语新闻
巴西宣布漏油应急计划 RIO DE JANEIRO, Oct. 22 (Xinhua) -- The Brazilian government on Tuesday announced a contingency plan to deal with oil spills. The plan will be activated only when corporate action is not enough to contain oil spills or
英语新闻
RIO DE JANEIRO, Feb. 25 (Xinhua) -- World football's governing body FIFA has approved a third company to provide goal-line technology. German firm Cairos will be among the bidders to install systems for next year's World Cup in Brazil and the 2013-14
英语新闻
1. The nation's Emergency Alert System will be activated nationally for the first time this afternoon to test its capability. FEMA chief Craig Fugate warns some video systems may make it look like a real emergency. He says that and other flaws are be
美联社新闻一分钟2011(十一月)
Israel Practices Biological Attack Response The Israeli government has carried out a two-day exercise it says is aimed at boosting preparedness for any terrorist attack aimed at sparking an outbreak of a highly contagious disease. Israeli officials e
VOA标准英语2011年(十二月)
Over the years, I never thought of my father as being very emotional, and he never was, at least not in front of me. Even though he was 68 years old and only five-foot-nine, while I was six feet and 260 pounds, he seemed huge to me. I always saw him
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When we remember something, the neurons in our brains communicate with each other in a particular way. The chemical and sometimes even structural changes that occur create a pathway called a memory trace. Signals traveling along these traces are what
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