Definition: unhappy because you are not with other people Level: B1
自从孩子们搬走后，她常常感到孤独。
She often feels ___lonely since her children moved away.
长途卡车司机孤独的生活可能很艰难。
The ___lonely life of a long-distance truck driver can be tough.
没有朋友，我会感到非常孤独。
Without my friends, I would feel incredibly ___lonely.
