set up ,set about , set down ,set out用法?set about ,set out区 ...答:set up: 建立,创立A new government was set up after the war. 新政府于战后成立。set down: 记下I have set down all the things that happened. 我已将发生的所有事记了下来。set about 开始, 散布 set out 出发, 开始, 装饰, 陈列, 测定, 宣布, 移植, 陈述 set down 放下, 使下车,...