他们的研究结果推翻了人们对居家工作者的普遍看法：即他们不具备从事其他工作的资格，以及他们将家庭作业作为处理儿童保育问题的短期策略。

Their findings disprove accepted notions about homeworkers: that they are unqualified for other jobs and that they use homework as a short-term strategy for dealing with child care.

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固定成本短期内不随作业量而变化的成本。(又称“不变成本”或“恒定成本”。)

Fixed cost a cost that does not vary with the volume of activity in the short term. (Also called Non-variable cost or Constant cost.)

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固定成本短期内不随作业量而变化的成本。(又称“不变成本”或“恒定成本”。)

Fixed cost a cost that does not vary with the volume of activity in the short term. (Also called Non-variable cost or Constant cost.)

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