a feeling of being unhappy because you have no friends or people to talk to 孤独的;寂寞的 a period of loneliness in his life 他一生中孤苦伶仃的一段时间 feelings of loneliness and depression 孤独和沮丧的感觉
the fact of a period of time being sad and spent alone 寂寞: 一段时期难过并独自度过the loneliness of all those evenings at home just watching TV 那些晚上在家看电视的孤独
the fact that very few people ever visit a place 孤独: 很少有人去过一个地方the desolation and loneliness of the island 这个岛屿的荒凉和孤独