work that you are obliged to perform for moral or legal reasons
the social force that binds you to the courses of action demanded by that force- John D.Rockefeller Jr同义词：responsibility, obligation
a government tax on imports or exports同义词：tariff
例句
It's our duty to protect the saplings.保护树苗是我们的责任。
I arrive at the hospital at eight o'clock, but I don't go on duty until nine.我八点钟就到医院了，但是九点钟我才去值班。
I'm duty bound to visit my old aunt.我有义务去探望年老的姑妈。
It's my duty to help you.帮你忙是我份内该做的事。
详细解释
du.ty n.（名词）【复数】du.ties An act or a course of action that is required of one by position, social custom, law, or religion:责任：因地位、社会习惯、法律或宗教的需要而产生的行为或行为的过程：例句：Do your duty to your country.为你的国家尽义务 Moral obligation:道德上义务：例句：acting out of duty.出于道德责任而为 The compulsion felt to meet such obligation.See Synonyms at obligation 责任感：一种想负起这种义务的感情参见 obligationA service, function, or task assigned to one, especially in the armed forces:兵役：军队里的服务、职责和分派的任务：例句：hazardous duty.危险的任务 Function or work; service:职责或工作；服务：例句：jury duty.See Synonyms at function 陪审员的职责参见 function Abbr. dy.A tax charged by a government, especially on imports.缩写 dy.税：一种由政府对进口货物征收的税，尤指进口关税Abbr. dy.缩写 dy.The work performed by a machine under specified conditions.功能负荷：由机器在特定条件下完成的工作量A measure of efficiency expressed as the amount of work done per unit of energy used.功率：一单位能量所做的功的量The total volume of water required to irrigate a given area in order to cultivate a specific crop until harvest.灌溉率：用来灌溉指定地区特定农作物从栽培到收获时期内的用水总量 <习惯用语>duty bound Obliged:责无旁贷的：例句：You are duty bound to help your little sister and brother.你有责任帮助你的弟弟妹妹 习惯用语>来源：Middle English duete 中古英语 duete from Anglo-Norman 源自 英法语 from due 源自 due variant of Old French deu [due] * see due 古法语 deu的变体 [应有的] *参见 due