单词：optical light filter
单词：optical light filter 相关文章
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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Artist: The weepies Song: Nobody Knows Me At All When I was a child everybody smiled Nobody knows me at all Very late at night and in the morning light Nobody knows me at all Now I got lots of friends Yes~but then again Nobody knows me at all Kids an
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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
M magnetic tape 磁性录音带 makeup artist 美容师 manipulation 操纵 markup 固定利润 matte 影像形板 Maysles Films 梅思利电影公司 memory-hook 回马枪 memory-jogger 回马枪 Merr
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AS IT IS 2016-05-12 Filter Blue Light for Better Sleep 电子设备过滤蓝光有助更好的睡眠 Many people like to use their phones or tablets at night before they go to sleep. 很多人喜欢在晚上睡觉前玩手机和平板电脑。 Howeve
2016年VOA慢速英语(五)月
吸烟有害健康(Smoking is hazardous to health。)。 常用表达： Have a smoke? 抽烟吗？ Help yourself to a cigarette. 请抽烟。 Would you like a cigarette? 想抽支烟吗？ Won't you have a smoke? 不想抽支烟吗？ Please have a
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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）
China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin
2018CRI中国国际广播电台
Like glasses, contact lenses work by bending light rays just the right amount to make the object come into focus on the retina at the back of the eye. Sometimes the eyes natural lens has an imperfection or may not be shaped properly, which can make y
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The Eye of the Dung Beetle A number of animals, including honeybees and butterflies, use sunlights polarization in their navigation s , but the dung beetle is the first animal ever discovered to use moonlights polarization to guide its travels. Polar
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