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Up to now, 55 BeiDou satellites 【小题1】 (send) up, meaning the completion of China’s self-developed BeiDou Navigation Satellite System (BDS). BDS appears later 【小题2】 America’s GPS, Russia’s GLONASS and EU’s GALILEO, but it can match them. As one of the four 【小题3】 (globe) navigation satellite systems, BDS involves efforts of over 400 agencies and 300,000 technicians.

First 【小题4】 (plan) in the early 1980s, BDS is comparable to GPS in terms of the 【小题5】 (accurate) of positioning. It also offers short message communication and thus can provide emergency communications in areas 【小题6】 traditional communication signals are poor. 【小题7】 better quality of their positioning services, Apple and Samsung phones, among others, are already using BDS’s signals, and so 【小题8】 (be) every Chinese brand.

The BDS is a huge technical achievement for China and can 【小题9】 (easy) pay off in the near future, 【小题10】 (promote) the world’s economic and social development as well as the peaceful use of space.