active relaxation exercise的用法和样例：
- Relaxation exercises can free your body of tension.
- It affects every aspect of projection, from the relaxation exercise, to the trance state and actual projection.
- Sam :I should teach you some relaxation exercises.
- Relaxation exercise is the importan t method of rehabilitation medicine.The influence on every system,basic principle and basic method of relaxation exercise was in troduced emphatically.