柯林斯词典toxin /ˈtɒksɪn/ (toxins) 1. N-VAR A toxin is any poisonous substance produced by bacteria, animals, or plants. 毒素 Tests showed increased levels of toxin in shellfish. 测试表明贝类中的毒素级别上升了。 返回 toxin剑桥词典a poisonous substance , especially one produced by bacteria , that causes disease （尤指致病细菌产生的）毒素 返回 toxin