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beneath the floor (A Brazilian man dug a staggering 130-foot-deep hole beneath his kitchen floor in search of buried treasure, but his epic quest ended in tragedy when he plummeted into the chasm and perished.  coasttocoastam.com ART Vancouver) | |||
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| in-floor | |||
| underfloor (об отоплении и т.п. key2russia) | |||
| под полом: 138 фраз в 28 тематиках |