rock pocket

例句：

1. 1. The old man kept his rock pocket filled with rocks for protection.
   那位老人用岩石填充他的岩石口袋以保护自己。
2. 2. She carried her rock pocket in her backpack to keep it safe.
   她把岩石口袋放在她的背包里，以确保它安全。
3. 3. He found a small rock pocket on the ground and carefully picked it up.
   他在地面上发现了一个小岩石口袋，并小心翼翼地把它捡起来。