VOA慢速英语--联合国报告称地球臭氧层愈合中

United Nations Report Says Earths Ozone Layer Is Healing A new study says the protective layer of the Earths atmosphere is finally healing from damage by humans use of harmful chemicals. Aerosol sprays and coolants had been thinning the ozone layer s

世界节假日博览 第152期:臭氧层保护日

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

英语课程计划-the Preservation of the Ozone Layer

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

新视野大学英语视听说教程 3 Unit 7-3

Task 2: A Work Qualification Test Script According to a report by Australian researchers, the hole in the ozone layer over Antarctica will probably start closing within five years. They say it may be completely closed within fifty years. The ozone la

3-14 全球污染趋势

Global Pollution Trends According to a recent report by the UNEP 1 , if car numbers keep increasing at the present rate, there will be more than a billion on the road by 2025. Today, motor vehicles pu

ENVIRONMENT REPORT - Shrinking Ozone Hole over Antarctica

ENVIRONMENT REPORT - November 1, 2002: Shrinking Ozone Hole over Antarctica By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Australian researchers say the hole in the ozone layer o

Scientists: Ozone-Eating Chemical Mysteriously Rising

Scientists have found that levels of a now-banned chemical are rising again in Earths atmosphere. The chemical is called CFC-11. It is the second most common kind of CFC, short for chlorofluorocarbon. Chlorofluorocarbons were once widely used in many

电信专业英英词典T-1

T1 Carrier A T1 carrier is a time-division multiplexed digital transmission facility capable of supporting 24 voice channels, (each encoded as a 64 kbps PCM DS0 signal), producing an aggregate multipl

电信专业英英词典P-1

P-MAC packet media access controller PAD packet assembler-disassembler PCB printed circuit board PDS premises distribution system Personal Communications Personal communications provides at least one

电信类英语词汇表大全-24

中文 英文 缩写 初始存取时间 initial access time 初始地址消息 Initial Address Message IAM 初始地址信息 initial address information 初始化报文 initial message 初始化信道分

AGRICULTURE REPORT - Restrictions on Methyl Bromide

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

如何建立安全的电子邮件

Unencrypted messages can be hijacked in transit and read or altered．If the mail is not digitally signed，you can't be sure where it came from． 未加密的信息可能在传输中被截获、偷看或窜改。如果邮件不是数字签名的，你

英语科普文选：如何建立安全的电子邮件

Unencrypted messages can be hijacked in transit and read or altered．If the mail is not digitally signed，you can't be sure where it came from． 未加密的信息可能在传输中被截获、偷看或窜改。如果邮件不是数字签名的，你

Cyber attacks against China remain severe: report

BEIJING, March 19 (Xinhua) -- A computer security official said China has become the world's biggest victim of cyber attacks, with a report from a national computer monitoring center revealing that many domestic computers were controlled via overseas

Study: Loss of Ozone Slows

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

VOA慢速英语2014 地球臭氧层出现恢复迹象

Earth's Ozone Layer Shows Signs of Recovery 地球臭氧层出现恢复迹象 The new report says the Earths ozone layer is showing signs of recovery. Ozone is a form of oxygen. It is found in the air we breathe and in Earth's atmosphere. The ozone l

VOA标准英语2010-In Britain, Transport Security Still a Co

In the wake of the subway bombings in Moscow, public transport systems seem vulnerable. London's system is one of the largest and most complex in the world. Officials in the British capital have long worked to keep the transport system safe, but have

联合国:臭氧层将于2048年恢复原状

Ozone layer（臭氧层） 'is no longer disappearing and will return to full strength by 2048', says UN report. The ozone layer is no longer disappearing and could be back to full strength by the middle of this century, UN scientists have confirmed（

Russia should beef up transport security: Medvedev

MOSCOW, Jan. 27 (Xinhua) -- Russia should adopt tougher security measures（安全措施） to ensure transport safety, Russian President Dmitry Medvedev said here on Thursday after he came back from the Davos Forum. The president visited Moscow's su

夏说英语新闻晨读 第166期:气候变暖怎么办

本期内容： Leaders from nearly 200 nations signed an agreement to phase out hydro fluorocarbons, chemicals used in refrigeration and air conditioning. In the 1980s the Montreal Protocol replaced chlorofluorocarbons, which were known to harm the