The career motivations of student enrollment are the internal motive to carry out the plan.

在校大学生的职业动机是大学生“村官”计划得以实施的内部动力。

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For example: When professor glossary, the teacher may unearth the glossary internal cultural element, carries on has the goal explanation, like this is helpful to the student understood accurately.

例如：在教授词汇时，教师可以挖掘词汇内部的文化因素，进行有目的的讲解，这样才有助于学生更加准确地理解。

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The Department of Homeland Security will "effective immediately" verify that every international student visa is valid, according to an internal memo obtained by the Associated Press news agency on Friday.

BBC: US tightens student visa rules after Boston bombing