If something is sufficient for a particular purpose, there is enough of it for the purpose.
例句
One metre of fabric is sufficient to cover the exterior of an 18-in-diameter hatbox...一米布足以包裹住直徑為 18 英寸的帽盒。Lighting levels should be sufficient for photography without flash...光照亮度應達到不開閃光燈便可以清楚拍照的程度。
ADJ
(理由、條件)充足的，充分的
If something is a sufficient cause or condition for something to happen, it can happen.
例句
Discipline is a necessary, but certainly not a sufficient condition for learning to take place.紀律是有必要的，但絕對不是保證學習成效的充分條件。
英漢詞典釋義
adv.
足夠地,充分地
The function of the stomach is to digest food sufficiently to enable it to pass into the intestine.胃的功能是充分消化食物,以便讓其進入腸道。The new policy was sufficiently elastic to accommodate both views.新政策充分靈活地適用兩種觀點。It turned out he had not insured the house sufficiently.原來他沒有給房屋投足保險。