A negative test got them entered into a lottery to win either $50 (equivalent to a week's average salary) or $100.
如果化验结果为阴性，可以参加抽奖，赢取50美元（相当于一周的平均工资）或100美元。
Teachers with different salary on the subjective well-being, life satisfaction, positive affect and negative affect are not significant;
不同收入幼儿教师在总体主观幸福感、生活满意度、负向情感及正向情感上均没有显著差异；
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