People use the word "blue" to express melancholy, but what for in loneliness?

人们总是用蓝色来形容忧郁。不知道他们会用什么形容孤独？

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I suppose every struggler in loneliness can see to it as a doctrine, as well as me.

我觉得孤独的奋斗者都可以把它当成箴言，就像我这样的人。

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Having a lot of children is a way of insuring themselves against loneliness in old age.

养很多孩子是他们预防老年孤寂的一种办法。

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In fact,a friend of a lonely person was fifty-two percent more likely to develop feelings of loneliness.

VOA: special.2009.12.22

As in "Mowing," Frost is writing about solitude, an essential loneliness.

写到“修剪草坪“，弗罗斯特是在写孤独，一种绝对的孤独。

耶鲁公开课 - 现代诗歌课程节选

Maybe the claim we all die alone is a psychological claim, that the psychological state we are in when we die is similar to loneliness.

也许这是一种心理学上的说法，认为我们死时，感觉很孤独。

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Other factors involved in loneliness include individuals' levels of social skill, fear of rejection, and self-confidence, Leary said.

CNN: Feeling lonely? Genes might be at fault

It warned that thousands of older people faced "the prospect of living out their last years in loneliness".

BBC: Day care services for elderly 'hit by cuts'

Variation in loneliness among people also has an explanation in evolutionary biology.

CNN: Feeling lonely? Genes might be at fault