VOA慢速英语:美国教师接种新冠疫苗后推动学校重新开学

administer – n. to manage the operation of (something, such as a company or government) or the use of (something, such as property)

kindergarten – n. a school or class for very young children

grade – n. a level of study that is completed by a student during one year

escalating – v. to become worse or to make (something) worse or more severe

nursing home – n. a place where people who are old or who are unable to take care of themselves can live and be taken care of