| 单词 | perforation |
| 释义 | perforation 1.(act)打孔；钻孔；打眼 the perforation of paper给纸打孔 2.【医】穿孔 Perforation of the womb is very rare.子宫穿孔非常罕见。 3.(hole)孔；洞 a box with perforations to allow the air in带透气孔的盒子 4.(method)打齿孔 the perforation of stamps给邮票打齿孔 |
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