noxious

这种植物会释放有毒气体，对人体健康有害。

This plant emits ___noxious gases that are harmful to human health.

那家工厂因向河流排放有毒废物而被罚款。

The factory was fined for dumping ___noxious waste into the river.

农民用除草剂清除正在扼杀麦田的有害杂草。

The farmer used herbicide to remove the ___noxious weeds choking his wheat field.