directory or book of numbers (e.g. telephone nos) 意味

• directory or book of numbers (e.g. telephone nos)
  番号帳
  ばんごうちょう
  

• book as thick as a telephone directory:    電話帳のように分厚い本
• smoothing (e.g. numbers):    smoothing (e.g. numbers)平滑化へいかつか
• operator (e.g. telephone):    operator (e.g. telephone)交換手こうかんしゅ