例句：
They feel lonely and sad.
他們感到孤獨和悲傷。
If you feel lonely, you can talk with me.
如果你覺得孤單，你可以和我說話。
I told him that I worried about he would feel lonely again in the empty house.
我告訴他，我擔心他在空蕩蕩的房子里又會感到孤獨。
Sunshine, let it through my lonely heart.
沐浴陽光，任它穿透我寂寥的心房。
Lonely heart, to invade my world deserted.
寂寞侵向心底，我的世界一片荒蕪。