spelunker

• n. 探勘洞穴者；地下冒险

spelunk,洞穴探险，-er,人。

spelunker (n.)

"a cave bug; one who explores caves as a hobby," 1942, agent noun formed from obsolete spelunk "cave, cavern." The verb spelunk "explore caves" and the verbal noun spelunking are attested from 1946 and appear to be back-formations.

1. Unless you're an spelunker, or a troglodyte , the answer is probably not too often.

除非你是一名洞穴探索爱好者或者一名穴居人.

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