VOA慢速英语:科学家们正在加紧研制中国猪瘟疫苗

quarantine – v. to remove or separate from other people or animals

contagious – adj. spreading from one person or organism to another

emphasis – n. special importance or attention given to some matter

immune system – n. the system that protects the body from diseases and infections

antibodies – n. substances produced by the body that fight disease