慢速英语:抗体疗法有希望治疗新冠病毒 但无法治愈

音频下载[点击右键另存为]

symptom - n. a change in the body which indicates that a disease is present

therapeutic - adj. producing good effects on your body or mind

ill - adj. not well or unhealthy

occur - v. happen

standard - n. a level of quality that is considered acceptable

authorization - n. official approval for something