学个词 Learn a Word-VOA英语教学 3447 pinpoint

 今天我们要学的词是 pinpoint¹.

 

pinpoint 的意思是准确地查明、确定。 An Australian-led study has claimed to have pinpointed² the birthplace of modern humans to a region south of the Zambesi River in southern Africa. 一项由澳大利亚主导的研究声称，已经确定现代人类的发源地在非洲南部赞比西河以南的地区。

 

1 pinpoint   

vt.准确地确定；用针标出…的精确位置

参考例句：

• It is difficult to pinpoint when water problems of the modern age began.很难准确地指出，现代用水的问题是什么时候出现的。
• I could pinpoint his precise location on a map.我能在地图上指明他的准确位置。

2 pinpointed   

准确地找出或描述( pinpoint的过去式和过去分词 )； 为…准确定位

参考例句：

• 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。