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wastepaper; scrap of paper; paper scraps
机の上の紙くずをゴミ箱に捨てた。
I threw the scraps of paper on the desk into the trash.
紙くずが風で飛ばされて散らかった。
Scraps of paper were blown away by the wind and scattered.
紙くずを集めてリサイクルに出した。
I collected the waste paper and put it out for recycling.