日本央行审议委员中村豊明：由于价格上涨和家庭节俭，国内私人消费缺乏动力。

Group 1 - The core viewpoint is that domestic private consumption in Japan is lacking momentum due to rising prices and household frugality [1] Group 2 - The Bank of Japan's committee member, Toyoaki Nakamura, highlighted the impact of price increases on consumer behavior [1] - There is a noted trend of households becoming more cautious with their spending in response to economic conditions [1]