An object made of a soft, pliable material, such as cotton or rubber, and fitted into the ear canal to block the entry of water or sound.
一种由柔软而灵便的材料制成的东西，如棉、橡胶等材料，以嵌入耳道挡住水或声音的进入。
2
Sound familiar? If you're one of these kinesthetic learners, get out a few things to anticipate an "ants in your pants" issue: a pen, a rubber band, and a ball.
听起来是不是很熟悉？如果你也是触觉型学习者，可以准备一些东西来应付你的坐立不安：钢笔、橡皮筋和球。
3
We applied the finite element method to study the variation of sound absorption structure and performance of rubber material under variable hydraulic pressure.