toxin|toxins

网络上的负面言论就像一种毒素，会腐蚀人们的思想。

Negative comments online act like a ___toxin, poisoning people's minds.

这些植物可以吸收土壤中的毒素。

These plants can absorb ___toxins from the soil.

某些细菌会产生毒素，导致食物中毒。

Some bacteria produce ___toxins that can cause food poisoning.