until one is blue in the face

副词 adv.
中文释义

英文释义

副词 adv.
  1. For a hopelessly long time; used especially in respect to discussing, explaining, insisting, etc. idiomatic
    — Near-synonym: until the cows come home

词源

By figurative extension from the concept of being literally out of breath (from talking so much, exerting oneself so much, and so on), which may sometimes cause one's face to look wan.
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