界層

(1)people having the same social, economic, or educational status; "the working class"; "an emerging professional class"

(2)同じ社会的・経済的・あるいは教育的地位を持つ人々

(3)an abstract place usually conceived as having depth; "a good actor communicates on several levels"; "a simile has at least two layers of meaning"; "the mind functions on many strata simultaneously"

(4)通常、深部があるとして考えられている抽象的な場所

(1)