1The social group between upper and lower classes, typically defined by income, occupation, and lifestyle (the middle class).
中間層の収入が減ると内需が落ち込みやすい。
If middle-class incomes fall, domestic demand tends to decline.
多くの家庭が中間層に属している都市もある。
There are cities where many households belong to the middle class.
教育費の高騰が中間層を圧迫している。
Rising education costs are squeezing the middle class.