Reading audio By VOAMay 18, 2014抱歉，本篇不提供文本。 Category Technology Report Related reading: China Research Mission Finds New Source of Water on Moon Astronomers Still Look to Hubble Space Telescope Cars that Talk to Each Other could Prevent most Accidents Gains in Aid for Poor Nations Fuel Talk of 'Dutch Disease' US Approves Apple AirPods to Be Used as Hearing Aids