pinpointed怎么读

His refusal to help simply pinpointed his cowardice.他拒绝帮助正显示他的胆小.Computers pinpointed where the shells were coming from.计算机确定了炮弹发射的位置。Our radar pinpointed the attacking planes.我们的雷达确定了来袭敌机的精确方位....

v.准确地找出或描述( pinpoint的过去式和过去分词 )，为…准确定位...