事实上 de facto: existing as a matter of fact rather than of right
法律上 de jure: as a matter of legal right
依据公允及善意的原则 ex aeque et bono: as a result of fair dealing1 and good conscience
出于善意的 ex gratia: done as a matter of favour （An ex gratia payment is one not required to be made by a legal duty.）
依职权而自然获得 ex officio: by virtue of holding an office
事后的；溯及既往的 ex post facto: by a subsequent act （describing any legal act, such as a statute, hich has retrospective effect）
主动的，自愿的 ex proprio motu（ex mero motu）: of his on motion
不可抗力 force majueure（法语）: irresistible compulsion or coercion
强制法 jus cogens（ius congens）: coercive la; a rule or principle in international la that is so fundamental that it bins all states and does not allo any exceptions
万民法，万国法，国际法 jus gentium: the la of people; international la
法无明文不处罚 nulla poena sine lege: no penalty（punishment） ithout a la
法无明文不为罪 nullum crimen sine lege: no crime ithout a la
条款需要遵守原则 pact sunt servand: a pact is not to be surrendered （agreements are to be kept）
自己，本身；本质上 per se
不受青睐的人（personna grata 受青睐的人） personna non-grata
初步的，表面上的 prima facie: at first appearance; on the face of things
情势变迁原则 rebus sic standibus: change of circumstances
无主物 res nullius: an asset susceptible of acquisition but presently under the onership or sovereignty of no legal person
未确定时日的 sine die: ithout a date
越权行为（与intra vires相对） ultra vires（act）
占领地保有原则 uti possidetis
