gravy train
noun [ C usually singular ] informal uk/ˈɡreɪ.vi ˌtreɪn/ us/ˈɡreɪ.vi ˌtreɪn/
（常指不诚实的）轻松赚大钱的方法，发横财的捷径
a way of making money quickly, easily, and often dishonestly
Compare: easy money
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。