Even if most of the symptoms of depression have cleared up, low-lying issues can indicate trouble down the line.

即使有时候抑郁症的症状是消失了，但一些潜在的事情也有可能再次触发神经。

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Many economic historians say the line between recession and depression is crossed when unemployment rises above 10% and stays there for several years.

许多经济历史学家说，如果失业率升至10%以上并持续数年，衰退就演变成了萧条。

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For Kendler, there is a clear, bright line between normal grief and clinical depression.

对肯德勒而言，普通的悲痛和临床上的抑郁症之间有着明确而清晰的分界线。

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Although bupropion isn't generally considered a first line treatment for depression during pregnancy, it might be an option for women who haven't responded to other medications or those who want to use it for smoking cessation as well.

CNN: Antidepressants: Safe during pregnancy?

The number of prescriptions for anti-depressants hit a record high of more than 31 million in England in 2006 - even though official guidance stresses they should not be a first line treatment for mild depression.

BBC: RELATED BBC SITES

Bottom line: one can argue whether depression is physical, mental or both.

FORBES: Are Damages For Depression Tax-Free?