限げん界かい貯ちょ蓄ちく性せい向こう

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Meanings

1

marginal propensity to save

Technical term in economics; the fraction of an additional unit of income that is saved rather than consumed.

限げん界かい貯ちょ蓄ちく性せい向こうが高たかい国くにでは、所しょ得とくが増ふえても消しょう費ひはあまり伸のびない。
In countries with a high marginal propensity to save, consumption does not increase much even when income rises.