1. 晕车：train on 锻炼效果 | train sickness 晕车 | train up 充分训练
1. By physiological analyze, freehand exercise for anti-sea-sickness is surely proved it can irritate and train otolithic organ system, so the body can adapt the stimulate to the surf gradually.
通过生理学分析，指出抗眩晕操确有刺激、锻炼耳石器官系统，使之逐渐适应海浪刺激的作用。
1. At over 4000 metres above sea level, oxygen was regularly released into the train compartments to ease altitude sickness.