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Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials. Mausoleums, generally speaking, are usually beautiful buildings, standing as stately monuments towards the spouse and children who're layed to relax inside them. These ornate buildings, commonly adorned with bronze and gold accents, marble columns and stained glass windows, are made and assembled to mirror feeling of dignity, serenity, and peace. There are two common complications with a lot of mausoleums, however, which, undesirably, rob the serene and peaceful quality from the families of the interred, and make up a mockery from the deceased bodies. These two conditions are mausoleum smells and coffin, or phorid flies. The EGR system routes many of the exhaust gases (6 ? 10%) through the EGR valve, last on the Intake System, and in the end in the combustion chamber. The exhaust gases are inert i.e. they don't burn within the combustion chamber; also, the exhaust gases use up a number of the space which could preferably be taken with the intake air. This decreases the volume of intake air available for the combustion process during each Power Stroke; which experts claim decreases the peak combustion temperatures. This leads to lower NOx emissions. 5. The concentration of their language