VOA慢速英语:新的冠状病毒有多致命？

outcome - n. something that happens as a result of an activity or process

envoy – n. a person who is sent by one government to represent it in dealing with another government

strain – n. a group of closely related plants or animals

symptoms– n. a change in the body or mind which indicates that a disease is present

diagnose – v. to recognize a disease, illness,

artificially – adj. not natural or real : made, produced, or done to seem like something natural

calculate – v. to get a general idea about the value, size, or cost