ad hoc
adj, adv (Latin 拉)
1 (made or arranged) for a particular purpose only; special(ly) 僅為某一目的(而做或安排)(的); 特別(的)
appoint an ad hoc committee to deal with the affair 指定一特別委員會處理此事.
2 (in a way that is) not planned in advance; informal(ly) 非事先計劃(的); 非正式(的)
Problems were solved on an ad hoc basis. 做了一些變通問題便解決了.
Points of policy are decided ad hoc. 政策的條款是臨時決定的.