“针尖”的拼音为：zhēn jiān...

针尖大的洞,也会刮进斗大的风.A tiny opening will let in a gust of wind.精确地说它不过象个针尖那么大.It was precisely like the point of a pin.针尖一般的阳光从窗帘的细孔里透进来.Pinpoint of sunlight came in throught minute holes in the curtains....

“针尖”的英语可以翻译为：the point of a needle，pinpoint，needle tip，needlepoint ...