例句：
经常性锻炼对于身体健康有直接影响。
Regular exercise has a direct bearing on fitness and health.
这样的运动可以锻炼腰部的肌肉。
This exercise will work the muscles of the lower back.
你应该把锻炼和健康饮食结合起来。
You should try to combine exercise with a healthy diet.
