“poisonous materials”造句，怎麼用poisonous materials造句

Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.

Leaks involving toxics and poisonous materials also require immediate evacuation of the contaminated area.

Should the carbon dioxide mix with water underground and form carbonic acid, they say, it could leach poisonous materials from rock deep underground that could then seep out.