A push factor can be as simple and mild a matter as difficulty in finding a suitable job, or as traumatic as war, or severe famine.

推动因素可以是简单而轻微的事情，比如找不到合适的工作，也可以是创伤性的事情，比如战争或严重的饥荒。

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The economy has been a major push factor for residents in the Frost Belt, particularly those in hard-hit areas like Michigan.

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If the U.S. continues to hurtle toward the fiscal cliff and shows signs of falling over, that could be a factor helping push crude oil under that triangle support line.

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Add the pressure of fitting in work and year-end deadlines, and the family factor can easily push us over the edge.

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