tunneling
a device that purifies water
A strong shoe for heavy-duty use, a boot. / (US) Any kind of shoe. / (military slang) United States Navy ankle length work shoes, distinct from dress shoes or combat boots. / A peasant or yokel.
present participle of tunnel
(obsolete) workmanship
丘の斜面を掘り進めながら、作業員たちは古い鉱山の竪坑を発見した。
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