function: applicable to anything living, natural, or constructed, implies a definite end or purpose that the thing in question serves or a particular kind of work it is intended to perform: the ~ of the stomach is to digest food.      (perform做履行执行表现表演to do something需要丰富的经验技巧that requires exceptional experience and skills，如perform gymnastics on the parallel bars双杠上做(或表演)体操，如to perform an experiment/a miracle/a ceremony/a play/a task/a role/a function/an act做实验/创奇迹/举行仪式/表演戏剧/执行任务/扮演角色或发挥作用/发挥作用/行为，如we're looking for people of all ages who have performed outstanding acts of bravery, kindness or courage我们正在寻找见义勇为乐于助人勇气可嘉的人，年龄不限, 名词performance表示工作表现绩效，或计算机性能)


office: is typically applied to the function or service expected of a person by reason of his or her trade, profession, or special relationship to others: exercised the ~s of both attorney and friend.   the post/ticket/box/Foreign/USTR office邮局/售票处/票房/英国外交部/美国贸易代表办公室，to take/leave office就/离职，the offices of a nurse护士职责，the noon office午间祈祷   trade(需要技巧的)工作，和profession专业occupation职业calling天职在2020-04-28 工作work-business组    


duty: applies to a task or responsibility imposed by one's occupation, rank, status, or calling: the lieutenant governor had a few official ~ies.  小窍门duty task responsibility三个词可以互相解释


province: applies to a function, office, or duty that naturally or logically falls within one's jurisdiction or competence: it is not governor's ~ to set foreign policy. jurisdiction司法权审判权管辖权the power that a court of law or an official has to carry out legal judgments or to enforce laws


function作用功能: 泛指任何事物用于某目的或工作(这里将serve和perform译作'用于use'，将二者概括)，office职责: 由于职业专业关系而应有的功能服务，duty职责: 由于职业级别职位而应有的任务责任，province职责范围: 指理应的管辖职权


记忆方法: 1）首字母FODP想成OF PD关于品德<==功能    来自词根FUNCT做履行to perform, to carry out，如defunct不存在已故functionary职员公务员dysfunctional功能失常malfunction故障，工程界有句名言form must follow funcction形式须取决于功能

         2）功能的意思是应有的行为行动mean the acts or operations expected of a person or thing.