gravy train (容易赚钱的)美差；肥缺；轻松赚大钱的机会

【例句】
Jack’s job at the Athletic Club as social director is a regular gravy train.
杰克在体育俱乐部任公关主任，这真是个薪金丰厚而工作又轻松的美差。

We were disgusted when bosses awarded themselves a massive pay rise. How can they get on the gravy train, but ask us to take a wage freeze?
看到老板为自己大幅加薪，我们感到十分气愤。他们凭什么轻轻松松捞油水却要求我们不涨工资？