缩写:Ex.n. 运动练习运用操练礼拜典礼vt. 锻炼练习使用使忙碌使惊恐vi. 运动练习Do you take regular exercise?你经常锻炼吗Exercise tones up your body.运动强健身体。Riding a bike is great exercise.骑自行车是很好的锻炼。Swimming is good exercise.游泳是有益的运动。How often do you exercise?你多长时间锻炼一次
