be a licence to print money idiom
是聚宝盆，是摇钱树，是发财的门路
If a company or activity is a licence to print money, it causes people to become very rich without having to make any effort.
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。