柯林斯詞典toxin /?t?ks?n/ (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. 測試表明貝類中的毒素級(jí)別上升了。 返回 toxin劍橋詞典a poisonous substance , especially one produced by bacteria , that causes disease （尤指致病細(xì)菌產(chǎn)生的）毒素 返回 toxin