pinpoint
n
(a) sharp end of a pin 针尖.
(b) anything that is very small or sharp 小的或尖的东西. pinpoint, v [Tn]
(a) find the exact position of (sth) 找出(某物)的确切位置
pinpoint the spot on a map 找出该处在地图上的位置.
(b) define (sth) exactly 准确解释或确定(某事物)
pinpoint the causes of the political unrest 确定政治动乱的原因
pinpoint the areas in most urgent need of help 确定需要紧急帮助的地区.