例句：
The diet is based on counting calories.
这个饮食安排以热量统计为根据。
Diet and exercise are equally important.
饮食和锻炼同样重要。
It's never too late to improve your diet.
改善饮食什么时候都不嫌晚。
Diet and exercise are obviously important.
显然，饮食和运动是重要的。
