pinpointed造句

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.