◎◎◎ dead zone ⪢⪢
You probably know what a _____ is. It's a place with no cellphone or wireless coverage. But the term isn't in the printed dictionary yet. It probably will be some day soon.
http://qindex.info/i.php?x=14742
◎◎◎ copper ⪢⪢
Copper is a red-brown metal often used in electric wire and pipes.
http://qindex.info/i.php?x=13303
 Wireless Radio Modulation
How Can We Improve Wireless Radio Modulation?
http://qindex.info/i.php?x=9372
Google ➔ DictionaryImageYouGlish

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