针尖非常锋利。

The ___point of the needle is very sharp.

小心别把铅笔尖弄断了。

Be careful not to break the ___point of your pencil.

他用叉子的尖端戳了一下，检查蛋糕是否烤好了。

He used the ___point of the fork to test if the cake was done.