Man expels air forcibly from the mouth and nose in an explosive, spasmodic involuntary action while sneezing. The compressive stress is phenomenally strong that could have our eyes injured if we keep eyes open. Hence, human closes eyes instinctly while sneezing.
人打喷嚏的时候是以一种不受控制、爆炸、痉挛式的行动从嘴巴或鼻子中用力排出空气. 气体压力非常的强大,以置于如果睁眼的话可以让眼睛损伤. 所以,人打喷嚏的时候都是本能的闭上眼睛.