Air pocket
01
エアポケット, 気泡
a small area or bubble filled with air, often found in liquids, materials, or spaces where air is trapped
例
The diver accidentally swam into an air pocket, allowing him to breathe for a moment.
ダイバーは偶然エアポケットに泳ぎ込み、一瞬息をすることができた。
