spelunking
noun [ U ] US uk/spəˈlʌŋ.kɪŋ/ us/spəˈlʌŋ.kɪŋ/ (UK potholing)
洞穴探察
the sport of walking and climbing in caves
Let's go spelunking at the weekend. 我们周末去洞穴探险怎样?
Synonym: caving
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