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鑽孔さんこう
boring, punching
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火鑽ひきり
hand drilling (to start a fire), hand drill, rubbing sticks to make a fire
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試鑽しさん
boring, drilling
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研鑽けんさん
diligent study, devoting oneself to one's studies
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鑽孔機さんこうき
boring machine, punching machine, perforator
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自己研鑽じこけんさん
self-improvement
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鑽孔テープさんこうテープ
punched tape, (perforated) paper tape
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鑽るきる
to start a fire (with wood-wood friction or by striking metal against stone)