Objective:To discuss the pertinence of women' VDT work and the unusual pregnancy.
目的：探讨妇女VDT作业与异常妊娠结局相关性。
We must pay much attention to the pertinence of professional education and direction.
对大学生的职业教育和指导必须具有针对性；
We must pay much attention to the pertinence of professional education and direction.
对大学生的职业教育和指导必须具有针对性；
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