have something on good authority idiom
有可靠的根据
to be able to believe a piece of information because you trust the person who told you it
I have it on good authority that she's getting married. 根据可靠的信息，她就要结婚了。
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。