10.Fitness center and some RD facilities, these are just things that where we do testing and we need some buildings to test in and there's hardly any people in them.
12.The PDT model was implemented to realize a web-based management information system for a digital orcha rd, and the digital system had been applied in Shandong Province, China since 2013.
13.Now this rd odd is perhaps not as useful as around or about because we only use it for counting – we can't use it to talk about someone's age or to give an idea of the time.