de·riv·able /dɪˈraɪvəbəl/
 (a.)可引出的,可誘導的,可推論的


 De·riv·a·ble a.  That can be derived; obtainable by transmission; capable of being known by inference, as from premises or data; capable of being traced, as from a radical; as, income is derivable from various sources.
    All honor derivable upon me.   --South.
    The exquisite pleasure derivable from the true and beautiful relations of domestic life.   --H. G. Bell.
    The argument derivable from the doxologies.   --J. H. Newman.

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 derivable
      adj : capable of being derived