“孤单的”的英语可以翻译为：alone，friendless，lone，lonely ...

星期天是特基感到最孤单的时候.It was on Sunday that Turgie felt his loneliness most keenly.自从他疏远了爱玲以后, 他是很孤单的.Since he had alienated Aileen, he was quite alone.你今晚看来满孤单的样子.You look very forsaken tonight....