ad hoc

adj, adv (Latin 拉) 1 (made or arranged) for a particular purpose only; special(ly) 仅为某一目的（而做或安排）（的）; 特别（的）: appoint an ad hoc committee to deal with the affair 指定一特别委员会处理此事. 2 (in a way that is) not planned in advance; informal(ly) 非事先计划（的）; 非正式（的）: Problems were solved on an ad hoc basis. 做了一些变通问题便解决了. * Points of policy are decided ad hoc. 政策的条款是临时决定的.

activist, activity, actor, actress, actual, actuality, actually, actuarial, actuary, actuate, acuity, acumen, acupuncture, acupuncturist, acute, acute angle, acute mark, acutely, acuteness, AD, ad infinitum, ad lib, ad nauseam, ad-lib, adage, adagio, Adam, Adam's apple, adamant, adamantly, adapt, adapt oneself to, adapt to, adapt...to, adaptability, adaptable, adaptation, adaption, adaptive, adaptor,