hyperventilation
noun [ U ] medical specialized uk/ˌhaɪ.pəˌven.tɪˈleɪ.ʃən/ us/ˌhaɪ.pɚˌven.t̬əlˈeɪ.ʃən/
过度换气
breathing too quickly and so causing too much oxygen to enter the blood
Hyperventilation can be caused by fear or panic. 恐惧或惊慌会导致换气过度。