慢速英语:新冠病毒或使部分教师离开教学岗位

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mobilize – v. to come together to take action on an issue

kid – n. a child or young person

union – n. an organization of workers in an industry that is formed to support their interests as a group

district – n. an area established by a government for official purposes

survey – n. an activity in which many people are asked a series of questions to gather information about what most do or think about something

lesson – n. a single class or part of a course of instruction

kindergarten – n. a school for children who are younger than grade school age

mask – n. a covering used to protect your face or cover your mouth