VOA慢速英语:美国高校抗击2019新型冠状病毒

campus – n. the area around a university, college or school

precaution – n. something that is done to prevent possible harm or trouble from happening in the future

chancellor – n. the head of some U.S. universities

transmission – n. the act or process by which something is spread or passed from one person or thing to another

role –n. the part something or someone plays

protocol – n. a system of rules that explain the correct conduct and procedures to be followed in formal situations

respiratory – adj. of or relating to breathing or the organs of the body that are used in breathing

syndrome – n. a disease or disorder that involves a particular group of signs and symptoms