absenteeism
1.N-UNCOUNT 不可数名词（通常指无正当理由、经常性的）旷工，旷课 Absenteeism is the fact or habit of frequently being away from work or school, usually without a good reason.
...the high rate of absenteeism.
高旷课率
...the high rate of absenteeism.
高旷课率
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