The hero of the story is in love with a woman who--alas and alack--does not love him.

主角爱上了一位女子，可是那女子并不爱他。

耶鲁公开课 - 死亡课程节选

This other man--alas and alack--has been condemned to death during the French Revolution.

这另一个人在法国革命时被判处死刑。

耶鲁公开课 - 死亡课程节选