Infancy
01
幼児期, 乳児期
the period or state of very early childhood
文法情報
有生性の状態
抽象的
形態的構成
複合語
不可算
02
幼少期, 初期の幼少期
the earliest state of immaturity
03
幼少期, 初期
the initial period in which an idea, project, technology, or organization is just beginning to develop
