该工厂被发现向河流中倾倒有毒化学物质。

The factory was found to be dumping ___poisonous chemicals into the river.

你能分辨有毒蘑菇和可食用品种吗？

Can you tell the difference between ___poisonous mushrooms and edible varieties?

工业事故可能向大气中泄漏有毒气体。

Industrial accidents can release ___poisonous gases into the atmosphere.