expatiate

英 [ɪkˈspeɪʃieɪt]

美 [ɪkˈspeɪʃieɪt]

v.  详述，细说，阐述

过去式：expatiated　过去分词：expatiated　现在分词：expatiating　第三人称单数：expatiates　

GRE

BNC.39317 / COCA.44653

短语用例

expatiate on/upon sth

• 详述；细说；阐述
  to write or speak in detail about a subject