| 释义 |       present participle of back (up)    1      as in bearing out       bearing out     vouching (for)     testifying (to)     verifying     witnessing     confirming     validating     corroborating     avouching     certifying     authenticating     vindicating     arguing     attesting     supporting     substantiating     guaranteeing     affirming     asserting     warranting     reinforcing     establishing     averring     declaring     avowing     professing     documenting     proving     demonstrating     reenforcing       See More   rebutting     refuting     disproving     contradicting     challenging     denying     questioning     disavowing     disclaiming     contesting     gainsaying     disputing     2      as in hardening       hardening     clotting     setting     coagulating     gelling     congealing       See More   running     flowing     rolling     streaming     pouring     arising     emanating     issuing     springing     disemboguing     racing     rushing     effusing     coursing   |