单词：filter drain
单词：filter drain 相关文章
Lesson 3 Should the Brain Drain Be Stopped by Restrictions? Text Brain Drain It is said that Shanghai's musicians abroad could form a worldclass symphony orchestra. But the Shanghai Symphony Orchestra
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But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi
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From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a
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人的脑子不仅是各种思想和情绪的源泉，而且还控制着人体各部门的功能。人脑是人身体上非常关键的组成部份。大概也正是因为这个原因，
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我们前两次讲了几个带有up这个词的习惯用语。今天要讲的习惯用语却都有和up相对的词： down。 Down这个词最常用的解释是往下。 比方说在今天要学的第一个习惯用语里：go down the drain。 Drai
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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
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