1、 lonely
2、
3、 When his wife died， he was very lonely、太太死后他非常孤独。
4、 The lonely old man worked his life away like a work horse、这个孤独的老人像牛马一样辛苦地干了一辈子，一直干到死。
5、 Working as a writer can be a very lonely existence、当作家会是一种很寂莫的生涯。
6、 He felt almost intolerably lonely、他感到几乎难以忍受的寂寞。