剑桥词典the methods that are used to stop a disease or infection from spreading from one person , animal , or place to others 生物安全 Chicken farmers have strengthened biosecurity to prevent contamination from people who have visited live-bird markets . 养鸡场农庄主加强了生物安全措施，以防去过活鸟市场的访客身上携带的污染。 返回 biosecurity