名詞 toxin:

1. a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species

1. A toxin that damages or destroys nerve tissue.
   神經毒素損害或破壞神經組織的毒素
2. A protein substance produced in the blood or tissues in response to a specific antigen, such as a bacterium or a toxin. Antibodies destroy or weaken bacteria and neutralize organic poisons, thus forming the basis of immunity.
   抗體，免疫體血液或組織針對某種抗原如細菌或毒素而產生的蛋白質物質。抗體消滅細菌或削弱其作用，中和有機毒素，因而形成免疫力
3. A biotechnology company is developing a range of new pesticide based on naturally occur toxin.
   一家生物工藝開發(fā)公司正在根據(jù)自然滋生毒素的原理研制新型農藥系列產品。
4. The cake on analysis was found to contain traces of toxin.
   經分析發(fā)現(xiàn)蛋糕里含有微量的毒素。