sustainvt.支持；承受；维持；认可；经受sustain a reverse遭受挫折sustained release持久释放Sustainable usage持续利用sustained actions赓续活动sustaining degree支持度sustained segment持续片段sustain an injury蒙受伤害sustainable yield可维持产量sustainer chamber主级发动机,主发动机燃烧室,行进发动机燃烧室sustain an object支持反对意见