this thought had sustained him throughout the years
同义词：
comforthelpassistencouragesuccorsupportgive strength tobe a source of strength tobe a tower of strength tobuoy upcarrycheer upheartensee someone throughinformal：buck up
2
undergo or suffer (something unpleasant, especially an injury).
he died after sustaining severe head injuries
同义词：
undergoexperiencego throughsufferendure
3
cause to continue or be prolonged for an extended period or without interruption.
he cannot sustain a normal conversation
同义词：
continuecarry onkeep upkeep goingkeep alivekeep in existencekeepmaintainprolongpreserveconserveprotractperpetuatebolster upprop upretainextendcontinuousongoingsteadycontinualcontinuingconstantrunningprolongedpersistentnonstopperpetualunfalteringunremittingunabatingunrelentingrelentlessunrelievedunbrokennever-endingunendingincessantunceasingceaselessround the clock
4
uphold, affirm, or confirm the justice or validity of.
