单词	spelunking
释义	spelunkingspe‧lunk‧ing /spəˈlʌŋkɪŋ/ noun [uncountable] American English Word Origin WORD ORIGINspelunking Origin: 1900-2000 Latin spelunca ‘cave’, from Greek spelynx the sport of walking and climbing in caves—spelunker noun [countable]
随便看	Aaron Aaron, Hank AARP AB ABA Abacha, General Sani aback abacus abalone abandon abandoned abandonment abandonware abase abasement abashed abate abattoir abaya Abba abbess abbey abbot Abbottabad Abbott and Costello

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