求翻译：白天在人群中假装着坚强，偶尔转身悄然挥泪。夜深人静的日子，看着你QQ隐约上线，几句问候过后，却努力的假装看不见，当失眠时，我才发现你已经下线。是什么意思？

In the crowd during the day, pretend to be strong, and occasionally turned to cries quietly. The dead of night the day, watching you qq vaguely on-line after a few greetings, but efforts to pretend not to see, when the insomnia, I realize you have been off the assembly line.