单词：clarification filtration
单词：clarification filtration 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
By David Gollust Washington 12 February 2008 The United States is seeking clarification of Israeli plans, announced Tuesday, to build some 1,100 new homes for Israelis in and around east Jerusalem. The State Department called the move a potential irr
VOA常速英语2008年（二月）
学会聆听 ，日后定会成功。 Many people neglect this most important communication skill. Do you know that we spend an average of our waking day communicating? Of this communication time, 9% is spent writing, 16% reading, 30% talking and 45%
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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）
The following phrases are used to participate in a meeting. These phrases are useful for expressing your ideas and giving input to a meeting. Getting the Chairperson's Attention 引起会议主席的注意 (Mister/Madam) chairman. May I have a word?
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