1. sustentation

1. 支撑：sustentation fund 资助基金 | sustentation 支撑 | susurrate 低语

2. 支持物：sustenance /生计/ | sustentation /支持物/ | susurrate /低语/喃喃低语/沙沙响/

1. the act of sustaining life by food or providing a means of subsistence

    e.g. they were in want of sustenance
           fishing was their main sustainment

    Synonym: sustenancesustainmentmaintenanceupkeep