单词：gas filter shell
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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
2018年VOA慢速英语(一)月
Broadcast: Feb 13, 2003 Demand for electricity is growing in Mexico, but the state-owned oil company, known as Pemex, is reducing the amount of natural gas it can provide for electrical generation. Th
VOA2003（上）-国际时讯
From A Shell Lisa Germano And the Earth spins round While the people fall down And the world stands still Not a sound, not a sound There is love, there is love To be found In the worst way, in the worst way In the worst way Its the buzz, its the buzz
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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）
Last week, Shell celebrated the discovery of gas in New Zealand 40 years ago. In 1969, gas was discovered off the coast of Taranaki on the west coast of the North Island. At that time, it was one of the biggest gas discoveries in the world. Ten years
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