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2.Radioactivity such as that of strontium 90 causes health problems in people even at low levels.
3.efforts to obtain a clean bass in orchestral recordings; clear laughter like a waterfall; clear reds and blues; a light lilting voice like a silver bell.
5.Onepart of silver is lied in galena, chalcopyrite and pyrite as independent minerals, such asnature silver, pyrargyrite, argentite, tetrahedrite, polybasite and silver-bearingtetrahedrite, another part of silver is lied in sulphide as isomorphism, and galena is avery important mineral inclusing silver which reaches 1000～2000(×10-6).
6.Sends a magical messenger to someone in the form of a silvery dart, rather like a small, ghostly bird.
7.An early photographic process with the image made on a light-sensitive silver-coated metallic plate.
8.Methods: Two families with five affected family members and six patients with sporadic DRD were examined.
9.Like the women who sat in front of roaring fireplaces， drinking tea incessantly from silver trays full of scones and crumpets.
10.A Study of Diameter-magnitude Relation on Palomar Sky Survey Atlas and Palomar Milky Way Infrared Atlas
