VOA常速英语：因日食而引发的观看镜的需求以及焦虑

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On Monday, Aug. 21, for the first time in 99 years, a solar eclipse will march across the United States from west coast to east coast, and excitement is building across the nation. Experts advise that people wear specific, protective eyewear to view the eclipse, but as VOA's Kane Farabaugh reports, finding the special lenses is becoming a difficult task.