重点词汇:
1. go to the gym 去健身
2. work out / hit the gym 健身
3. machines 器械
4. treadmill 跑步机
5. exercise bike (室内)健身脚踏车
6. stair climber 踏步机
7. free weights 自由力量(负重器械训练)
8. bench press 举重练习凳
9. curl 单臂哑铃
10. squat 蹲举
11. aerobics 跳操
12. aerobic exercise / cardio exercise 有氧运动
13. personal trainier 私人教练