air sac
編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看
air sac — 名詞
1. a small pocket of air in the body of a bird or insect that helps with breathing
1.名詞
釋義
氣囊
a small pocket of air in the body of a bird or insect that helps with breathing
例句
Birds have air sacs that make their flight more efficient.