第一句：I'm going over to the gym.
A: Peter, I'm going over to the gym. I want to go some running.
B: Tina, why don't you run outside?
A: Are you kidding? Do you know how cold it is today?
B: Yeah, I suppose.
第二句：I guess it isn't healthy to run in this weather.
A: I guess it isn't healthy to run in this weather. Wait for me a minute. I'll go over to the gym, too.
A: Yes, why not? Just let me get my gym clothes together,
B: That's great.
I was in the swimming team in high school.
I'd like to do some weight training.