perforate的一般过去时为：perforated...

二穿孔的...

perforates的音标：...

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]...

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]...

adj.无孔的，无齿孔的...

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...

perforate的现在进行时为：perforating...

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的第三人称单数（三单）为：perforates...

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]...

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...

vt.穿孔于，在…上打眼，（在纸张等上）打齿孔[孔眼线]...

perforate的现在完成时为：perforated...

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]...

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....