The Chinese phrase Four Great Ancient Capitals of China (中国四大古都 pinyin zhong1 guo2 si4 da4 gu3 du1) refers to Nanjing, Beijing, Xi'an, and Luoyang.
... dB is the abbreviation for Decibel; see Bel DB is a French automobile maker; see DB (car) DB is the abbreviation for Deutsche Bahn, the major German railway company ...