A：Alison, would you like to have some more? 艾莉森，你要再吃一些吗?
B：No, thanks. I've had enough. 不，谢谢。我够了。
A：Actually you haven't had much. 事实上，你吃得不多。
B：To tell you the truth, I am on a diet. 老实告诉你，我正在节食。
A：That sounds ridiculous. Why? 这听起来很荒唐。为什么?
B：Well, I am gaining weight these days, and I have to watch my calories. 额，这些天我的体重增加了，我必须注意卡路里。