perforate的一般过去时为：perforated...

An ulcer perforates the duodenal wall.溃疡使十二指肠壁穿孔....

biperforate的音标：biperforate的英式发音音标为：[baɪpəfə'rɪt]biperforate的美式发音音标为：[baɪpəfə'rɪt]...

二穿孔的...

perforates的音标：...

imperforate的音标：imperforate的英式发音音标为：[ɪm'pɜ:fərɪt]imperforate的美式发音音标为：[ɪm'pɜfərɪt]...

perforate的现在完成时为：perforated...

perforated的音标：perforated的英式发音音标为：['pɜ:fəreɪtɪd]perforated的美式发音音标为：['pɚfəˌretɪd]...

perforate的现在进行时为：perforating...

vt.穿孔于，在…上打眼，（在纸张等上）打齿孔[孔眼线]...

adj.无孔的，无齿孔的...

perforate的第三人称单数（三单）为：perforates...

Keep good apples in perforated polythene bags.把好苹果放在有孔的聚乙烯袋中保存。The ulcer has perforated.溃疡已穿孔.Sheets of postage stamps are perforated.一张张的邮票都打过接缝孔....

I refused to wear headphones because they can perforate your eardrums.我不愿戴耳机，因为它可能会使鼓膜穿孔。In advanced stages the opaque corneas may ulcerate and even perforate.在疾病后期,不透明的角膜可能产生溃疡,甚至穿孔.The Ascaris adults may perforate a su...

v.穿孔于，在…上打眼( perforate的第三人称单数 )，（在纸张等上）打齿孔[孔眼线]...

Objective To explore the way to preventing incisions infection of gangrened and perforated appendicitis.目的探讨预防坏疽穿孔性阑尾炎切口感染的有效方法.Keep good apples in perforated polythene bags.把好苹果放在有孔的聚乙烯袋中保存。The ulcer has perforated into...

perforate的音标：perforate的英式发音音标为：['pɜ:fəreɪt]perforate的美式发音音标为：['pɜrfəreɪt]...

I refused to wear headphones because they can perforate your eardrums.我不愿戴耳机，因为它可能会使鼓膜穿孔。to perforate something with a pin用针在某物上穿孔In advanced stages the opaque corneas may ulcerate and even perforate.在疾病后期,不透明的角膜可能产生溃疡,甚...

Objective To probe into the value of imperforate hymen diagnosed by ultrasound.目的探讨处女膜闭锁的超声诊断价值.Purpose : To investigate the CT features of imperforate hymen in adolescence.目的: 总结青春期处女膜闭锁的CT表现.Objective Explore the misdi...

v.穿孔于，在…上打眼( perforate的过去式和过去分词 )，（在纸张等上）打齿孔[孔眼线]...