absorbingsubstance

例句：

1. 1. The absorbing substance in the solution is crucial for its effectiveness.
   溶液中的吸收物质对其有效性至关重要。
2. 2. The adsorbent material is designed to efficiently remove pollutants from the air.
   吸附材料被设计成从空气中高效去除污染物。
3. 3.The absorbing substance helps to neutralize the acidity of the wastewater.
   吸收物质有助于中和废水的酸性。