perforate的一般过去时怎么写

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]...

perforate的现在进行时为：perforating...

perforate的第三人称单数（三单）为：perforates...

vt.穿孔于，在…上打眼，（在纸张等上）打齿孔[孔眼线]...

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...

perforate的现在完成时为：perforated...

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...