for a fact

副词 adv.
中文释义
发音 fôr′ ə făkt′

英文释义

副词 adv.
  1. Without doubt. idiomatic,not-comparable
    — I know this for a fact.
  2. Used other than figuratively or idiomatically: see for, a, fact. not-comparable
    — The doctor had asked for a fact that I could not remember.
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