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...
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...
The ferric acetylacetonate, phenyl betanaphthylamine , and lecithin are added through 40 - mesh screen.将乙酰丙酮铁, 苯基B- 萘胺及磷脂通过40目筛加入.Lecithin from soybeans and vitamin E from vegetable oil.卵磷脂来自大豆,而维他命E来自植物油.refined lecithi...