Why Do We Sneeze?
1,785 意见
• 01/17/24
0
0
嵌入
samer kareem
8 订户
The long-standing answer has been that sneezing is a reflex. When irritants — such as germs, dust, pollen, animal dander, or pollutants, just to name just a few — infiltrate the nose lining, the brain sends out a signal to get rid of it. That triggers a deep breath, which gets held in the lungs.
显示更多
SORT BY-
热门评论
-
最新评论