情景会话：健身中心--- 健身器材
　　教练 If you want to tone up your legs, I recommend using the treadmill.
　　如果想锻炼腿部，我推荐你使用跑步机。
　　简 Thanks. Is there anything that I should pay attention to?
　　谢谢。应该注意些什么?
　　教练 Yeah, there are several things. First of all, you'd better start with a low speed.
　　嗯，有几件事情需要注意。首先，最好从慢速开始。
　　简 Yeah, I see.
　　嗯，我明白。
　　教练 Drink some water every 15 minutes and don't use the treadmill more than four times a week.
　　每十五分钟就喝一次水，还有每周使用跑步机的次数不要超过四次。
　　简 Ok, thanks.
　　情景会话：健身中心--- 健身操
　　琳达 How long do you do aerobics for every time you go?
　　健身操一次要跳多久啊?
　　张婷 One hour.
　　一个小时。
　　琳达 That's too long. Aren't you really tired afterwards?
　　时间太长了。跳完了不累吗?
　　张婷 Of course. But it helps you lose weight in all areas of your body.
　　当然累了。但是能帮助你全身减肥。
　　琳达 Really? I'll go with you to do aerobics then.