But then you became an unsharpened pencil.

但后来你变成了一支未削尖的铅笔。

Look at this picture of a bunch of unsharpened pencils.

看这张照片，上面有一堆未削尖的铅笔。

If the ax is dull and its edge unsharpened, more strength is needed, but skill will bring success.

铁器钝了，若不将刃磨快，就必多费气力，但得智慧指教，便有益处。

If you look closely at an unsharpened pencil, you can see they're still sandwiches of wood and graphite.

如果你仔细观察一支未削尖的铅笔，你会发现它们仍然是木头和石墨的三明治。