VOA慢速英语:23国领导人呼吁制定国际条约 以应对未来的流行病

origins – n. (often pl.) the point or place where something begins or is created

multilateral – adj. involving more than two groups or countries

address – v. to give attention to something; to deal with something

response – v. something done that is a reaction to something else; an answer or reply

sample –n. a small amount of something that is used to give information about what it was taken from