工厂排出的废水含有多种有害污染物。

The wastewater from the factory contains various harmful ___contaminants.

工厂排放的废水中发现了有害污染物。

Harmful ___contaminants were found in the wastewater discharged from the factory.

工厂检测到水中含有污染物后立即停止了生产。

The factory stopped production after detecting ___contaminants in the water.