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汤姆:
Would you like another piece of apple pie? 
你要再来一份苹果派吗?
艾米:
No, thanks. I am on a diet.
不了.谢谢.我在节食减肥.
汤姆:
On a diet?
节食减肥?
艾米:
Yes. I have to prepare for the beauty contest next week.
是啊.我要为下周的选美比赛做准备.