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儿子:
I`m afraid I must be going now, Mom and Dad, or I`ll miss the train. 
恐怕我现在必须走了.爸爸妈妈.不然的话我肯定会赶不上火车的.
妈妈:
Must you? ( Looking at her watch) Oh, it`s already six. Well, dear, your first time away from home! Take care of yourself at college.( To Father.) Let`s go to see him off at the station.
你必须得走吗?(看看她的手表)哦.已经六点了.那好吧.亲爱的.你第一次离家!在大学里好好照顾自己.(对爸爸)我们去车站送他吧.
爸爸:
OK.
好的.
儿子:
Oh, no. There`s no need. I`m not a child.
哦.不用了.没有必要.我又不是小孩子.
妈妈:
But-
可是--
儿子:
Please stay.
你们就止步吧.
妈妈:
Alright. We`ll stay. I hope you will study hard at college.
那好吧.我们不去了.我希望你在大学里能用功学习.
儿子:
Yes, of course, I will, Mom.
当然会的.妈妈.
爸爸:
Concentrate on your studies. Don`t worry about us.
集中精力在学习上.不要担心我们俩.
儿子:
O.K., Dad. I will try my best, good-bye! I`ll come back home whenever I have a chance.
好的.爸爸.我会尽力的.再见!一有机会我就会回来的.
爸爸:
Good-bye, son. Good luck to you.
再见.孩子.祝你好运. 
儿子:
Thank you. Mom and Dad. Bye-bye.
谢谢爸爸妈妈.再见.