她唱着悲伤的歌。

She sang a sad song.

《新英汉大辞典》

那么，你为什么还这么高兴地唱着歌呢？通常人们丢失了东西时总是很悲伤的。

Then why are you singing so gaily? Usually when somebody loses something, he is sad.

youdao

在她获知她的父亲被哈姆雷特杀死之后，她便失去理智了，从那时起，她就经常一个人悲伤地唱着歌，绕着城堡走。

She began to lose her mind after she learned that her father had been killed by Hamlet. From then on she often walked around the castle alone, singing sadly.

youdao

在她获知她的父亲被哈姆雷特杀死之后，她便失去理智了，从那时起，她就经常一个人悲伤地唱着歌，绕着城堡走。

She began to lose her mind after she learned that her father had been killed by Hamlet. From then on she often walked around the castle alone, singing sadly.

youdao