sinus
🇺🇸
/ˈsaɪnəs/
🇬🇧
/ˈsaɪnəs/
noun
R
A sinus is an air-filled space in the skull that is connected to the nasal passages. It helps with things like breathing and speaking.
I have a headache because of my blocked sinuses.
我有头痛，因为我的鼻窦堵塞了。
translation
窦
词形变化
Plural
sinuses