例句：
1、I want an apple.
我想要一个苹果。
2、Penny's only son was the apple of her eye.
彭妮的独子是她的心肝宝贝。
3、I planted those apple trees.
我栽了那些苹果树。
4、Someone threw an apple core
有人扔了一个苹果核。
5、Polly took a bite of the apple, chewed and swallowed.
波利咬了一口苹果，嚼了嚼咽了下去。
