adj.穿孔的；凿孔的
动词perforate的过去式和过去分词.
Sheets of postage stamps are perforated. 一张张的邮票都打过接缝孔。
It is said that the patient had perforated ulcers. 据说该病人以前有过溃疡穿孔。
I was standing on the surface of a perforated sphere. 我站在地球表面,它千疮百孔。
The samples are collected in perforated polyethylene bags. 样品采集在有孔的聚乙稀袋中。
The new winter ventilation system consisted of a perforated plastic tube. 新的冬季通风系统由带孔的塑料管组成。
