The higher need for certainty of income would mean a lower tolerance for volatility. 越需要有穩定的收入的人，對波動的容忍能力越低。
For instance, during an economic downturn, fluctuations in income may compel parents to withdraw their children from school. 例如在經濟衰退時期，收入的波動可能迫使父母要小孩輟學。
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