noun 下载 🔗分享 疫苗, 预防针 A substance given to stimulate the body's production of antibodies and provide immunity against a disease without causing the disease itself in the treatment, prepared from the agent that causes the disease (or a related, also effective, but safer disease), or a synthetic substitute. Examples : "My son received the measles vaccine to protect him from getting the illness. " 我儿子打了麻疹疫苗,为了保护他不生麻疹这种病。 medicine disease biology biochemistry substance physiology virus aid science 与AI对话词汇游戏阅读练习