慢速英语:教师短缺意味着美国的一些学校系统付出了更多的代价

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

degree – n. an official document and title that is given to someone who has successfully completed a series of classes at a college or university

laundry – n. clothes, towels, sheets, etc., that need to be washed or that have been washed

contract – n. clothes, towels, sheets, etc., that need to be washed or that have been washed