(also biˌcarbonate of ˈsodabaking soda) noun [U] (symbol NaHCO₃) a white powder that is used in baking to make cakes, etc rise and become light 碳酸氢钠；小苏打
sodium carbonateˌsodium ˈcarbonate
(also washing soda) noun [U] (symbol Na₂CO₃) a chemical compound in the form of whiteCRYSTALSor powder that is used in making glass, soap and paper, and for making hard water soft 碳酸钠；苏打
sodium chlorideˌsodium ˈchloride
noun [U] (symbol NaCl) common salt (a chemical compound ofSODIUMandCHLORINE) 氯化钠；食盐