slit stay bolt

例句：

1. 1. The book has a slit in the cover.
   这本书封面有一个缝隙。
2. 2. She carefully cut a slit in the fabric to make it easier to sew.
   她小心地在布料上剪了一个缝，以便更容易缝制。
3. 3. The animal had a small slit on its leg.
   这只动物腿上有一个小裂缝。