短语词组短语deferral deferment 递延项目deferment t 拖迟;延期Deferment Payment 缓缴deferment charge 逾期费deferment period 延缓期间educational deferment 延期服兵役Deferment account 延期账户deferment index 递延指标deferment factor 延迟因素;[油气]延期率 返回 deferment