attenuating medium

例句：

1. 1.The radio waves are traveling through the attenuating medium.
   无线电波正在通过衰减介质传播。
2. 2.The scientists used a special material to create an attenuating medium.
   科学家们使用一种特殊的材料来创造一种衰减介质。
3. 3.The attenuating medium helps to slow down the speed of light.
   衰减介质有助于减缓光速。