资料来源 : pyDict

大致上,近似地

资料来源 : Free On-Line Dictionary of Computing

to a first approximation
     
        1. When one is doing certain numerical computations, an
        approximate solution may be computed by any of several
        heuristic methods, then refined to a final value.  By using
        the starting point of a first approximation of the answer, one
        can write an algorithm that converges more quickly to the
        correct result.
     
        2. In jargon, a preface to any comment that indicates that the
        comment is only approximately true.  The remark "To a first
        approximation, I feel good" might indicate that deeper
        questioning would reveal that not all is perfect (e.g. a
        nagging cough still remains after an illness).
     
        [{Jargon File}]