support和sustain的区别拜托各位大神

support 动词 v.资助；维持；供养；养活 help someone by giving money,etc.give food,clothes,and a home to someone · Air,food and water are necessary to support life.空气、食物和水是维持生命所不可缺少的.· Mr.Donovan has to support a large family.多诺万先生得养活一大家子人.· He has a wife and fifteen children to support.他要养活妻子和十五个孩子.sustain 及物动词 vt.维持 ,赡养,扶养 to supply with necessities or nourishment · sustain a family 维持家计 · sustain an institution 维持公共设施 Most couples need two wage-packets to sustain their standard of living.维持生活标准（生活中所必需的一些东东） Only few families in Britain are supported by the father alone .由父亲支撑着一个家（父亲给他们衣服穿、给食物吃、给钱花）