Chen pointed out that some students, although they are in good physical condition on the ground, suffer all kinds of problems in the air, including nausea, numbness in the limbs and difficulties in breathing.
空軍官校的學生，第四年開始接受飛行訓練。有些同學，在地上看來身體狀況很好，但一到天上，暈眩、嘔吐、四肢麻痺、呼吸困難等各種毛病都來了。