The girl looked lonely, too.

这个女孩看起来也很孤独。

youdao

Approached in the dark, the lights looked lonely and purposeless.

在黑暗中走近时。那些电灯显得孤单而无意义。

youdao

But off in one corner, receiving no attention from anyone, there was an old purple doll silently gazing at the dance floor, her eyes were blank and she looked lonely.

可是在一个角落里，谁也没有注意到，有一只紫色的香草娃娃正一声不吭地望着舞池，她的眼神呆呆的，显得十分孤独。

youdao

Father looked tired and lonely.

VOA: special.2009.03.07

The latest work from Ohio State University looked at levels of inflammation in response to stress in lonely people.

BBC: Why does being lonely make you ill?