nounB1
洞窟、洞穴
a large hole in the side of a hill or under the ground
例文
The explorers found a deep cave under the hill.
探検家たちは丘の下に深い洞窟を見つけた。
洞窟、洞穴
a large hole in the side of a hill or under the ground
例文
The explorers found a deep cave under the hill.
探検家たちは丘の下に深い洞窟を見つけた。