fouling of catalyst

例句：

1. 1.The contamination of the environment by industrial waste is a major concern.
   工业废物对环境的污染是一个主要问题。
2. 2. The fouling of the pipeline caused significant delays in the delivery of goods.
   管道的堵塞导致货物交付延迟。
3. 3.To prevent contamination, it is important to follow proper disposal procedures for hazardous waste.
   为了预防污染，对于危险废物应遵循适当的处置程序。