hitch one's wagon to a star

1. 立雄心

He was a boy from a poor family who had hitched his wagon to a star and was determined to get a good education for himself.

他是个有雄心壮志的贫家子弟, 打定主意要受好的教育。

on the (water) wagon

1. 戒酒

He's taken his doctor's advice very seriously and has gone on the wagon.

他认真听取了医生的劝告, 开始戒酒。