资料来源 : pyDict

从前,过去

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Previously \Pre"vi*ous*ly\, adv.
   Beforehand; antecedently; as, a plan previously formed.

资料来源 : WordNet®

previously
     adv : at an earlier time or formerly; "she had previously lived in
           Chicago"; "he was previously president of a bank";
           "better than anything previously proposed"; "a
           previously unquestioned attitude"; "antecedently
           arranged" [syn: {antecedently}]