a pruning hook的用法和样例：
- Cute Jim sat on the dune eating a prune in June.
- Which fruit becomes a prune when it is dried?
- Using an extendable carbon-fibre pruning hook is a much easier way of harvesting betel nuts than climbing the tree!
- "I like nasty things better than nice things, " said Jessica, with such a prunes and prisms of diction that all the grown-ups had to laugh.