back down是什么意思

back down

美[bækdaʊn]  英[bækdaʊn]
  近义词：back，backoff，bowout，pullout，chickenout，backup，

英英释义

Verb
  1. move backwards from a certain position;

    "The bully had to back down"

  2. remove oneself from an obligation;

    "He bowed out when he heard how much work was involved"

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