楦

例句：

1. 1. He bought a new pair of shoes and needed to replace the old ones with a shoehorn.
   他买了一双新鞋，需要用鞋楦子来替换旧的。
2. 2. The shoehorn is a useful tool for mending holes in shoes.
   鞋楦是修补鞋子洞的好工具。
3. 3. She carefully placed the shoehorn into the hole, ensuring it fit perfectly.
   她小心翼翼地把鞋楦子放到洞里，确保它完全合适。