题目描述 “I have a pen,I have an apple.Eh,Apple-Pen!. I have a pen,I have pineapple.En,Pineapple-Pen! Apple-Pen,Pineapple-Pen.Eh,Pen-Pineapple-Apple-Pen!” Akn最近中毒于一首音乐，于是他买来了一堆苹果来学习这首音乐。Akn发现，只要边唱这首歌，边做把