打孔 dǎkǒng perforate Definitions Defs Origin Strokes Stroke Words Sentences Sents 打孔卡 dǎkǒngkǎ punch card (computing) punch card打孔器 dǎkǒngqì hole puncher 打孔钻 dǎkǒngzuàn drill a tool or machine bit used for boring holes in materials such as wood, metal, or soil
