my lips are sealed idiom
我会守口如瓶的
said when you are promising to keep a secret
"Oh and please don't tell him you saw me here." "Don't worry. My lips are sealed." “哦，请别告诉他你在这里见过我。”“放心吧，我会守口如瓶的。”
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。