英语翻译①我已经决定坐飞机去夏威夷.②四年前我开始学习英语.③长劲鹿的身高是我们的两倍.④笑话书

1.I have decided to fly to Hawaii.
2.I started to learn English four years ago.
3.The height of a giraffe is twice as much as that of a human.
4.A collection of jokes
我是英语专业的,全自主翻译.