He trudged home feeling lonely and let down.
他步履艱難地往家走，感到孤獨而沮喪。
She felt lonely and hopeless.
她感到孤獨絕望。
I don't get lonely now because I make the effort to see people.
我現在不覺得孤獨了，因為我嘗試著與人交往。
They often have a lonely and solitary life to lead.
他們常常過一種獨居的孤獨生活。
I would imagine she's quite lonely living on her own.
我猜想她一個人過肯定很孤獨。