ex·tra·ver·sion /ˌɛkstrəˈvɚ/
  外翻;外向性
  ex·tra·ver·sion /ˌɛkstrəˈvɝʒən, ʃən/ 名詞
  Ex·tra·ver·sion n.  The act of throwing out; the state of being turned or thrown out. [Obs.]
  ◄ ►
  extraversion
       n : (psychology) an extroverted disposition; concern with what
           is outside the self [syn: extroversion] [ant: introversion,
            ambiversion]