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用法:1 [U] perforating or being perforated （在某物上）穿孔; （在纸等上）打齿孔.
用法:2 [C] series of small holes made in paper, etc （纸等上的）齿孔:tear the sheet along the perforations 顺齿孔撕下该页.
英汉词典包含54938条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。