defer: implies a deliberate putting off to a later date or time: ~red payment of the loan.    谚语never put it off tomorrow what you can do today今日事今日毕（永远不要把今天能做的事拖到明天）     解释里用了故意deliberate一词，说明defer通常会造成不良后果


postpone: implies an intentional deferring usually to a definite time: the game was ~d until Saturday.


suspend: implies a temporary stopping with an added suggestion of waiting until some expressed or implied condition is satisfied: all business has been ~d while repairs are being made.


stay: suggests the stopping or checking by an intervening obstacle, agency, or authority: measures intended to ~ the rapid rate of inflation.    （check阻碍控制implies the restraining or impeding of a progress, activity, or impetus阻碍行走行动，如deep mud checked our progress深泥阻碍我们前进，如the government is determined to check the growth of public spending政府决心要控制公共开支的增长，如check your anger/laughter/tears忍住怒火/笑声/眼泪）


defer推迟: 指故意推迟日期，postpone推迟: 指有意推迟到确定日期，suspend暂停: 指暂时停止，直到满足条件，stay控制阻止: 表示控制停止，通过设置障碍或人员职权干预

记忆方法:  1）首字母DPSS点评时事应慎重<==推迟         "延"本义是"走长路"，<说文>: "延，长行也"，如延长延续蔓延延年益寿；引申为"展缓、推迟"，如延迟延缓拖延延误        "迟"有2个意思，本义是"慢慢走"  <说文>: "迟，徐行也"，引申为1、"慢、缓"，如迟缓迟笨迟钝迟疑迟滞  2、 "晚"，如迟到迟暮迟早推迟延迟   "推"的意思是"手向外用力使物体移动"。这个字使用十分广泛，如推车推土推拿推倒推广推行推动推销推举推崇推论推测推演推辞推诿，如推心置腹表示完全吐露心声，如本例推延表示使延期

          2）推迟的意思是延迟行动mean to delay an action or proceeding.