That's when I eat lunch 那是我吃午饭的时候
Sue: Mother,when was Weight Watchers International founded,do you know?
Mrs.Santelli: When was it founded? How would I know?
Sue: Haven't you noticed it's advertised every night in the paper?
Mrs.Santelli: No,actually I haven't.
Sue: Evidently it was organized by some local women.
Mrs.Santelli: Wait a minute. Are you trying to tell me something?
Sue: Frankly,Mother,you could lose a few pounds.
Mrs.Santelli: I know. You're right. When are the classes given?
Mrs.Santelli: Do you remember?
Sue: There's a special mother's course offered from eleven to one.
Mrs.Santelli: Oh,what a shame! That's when I eat lunch.