but-

短语
FREQ #5141

释义与例句

affix
  1. 1.

    Denotes the presence of four carbon atoms in the parent chain when forming names of organic compounds.

    化学

词源

Etymology tree Proto-Indo-European *gʷṓws Proto-Hellenic *gʷous Ancient Greek βοῦς (boûs) Proto-Indo-European *tewh₂-der. Proto-Hellenic *tūrós Ancient Greek τῡρός (tūrós) Ancient Greek βούτῡρος (boútūros)der. English but- From butyl. Ultimately from Ancient Greek βούτυρος (boúturos, “butter”).

来源：wiktionary