have a nodding acquaintance with someone/something idiom
与（某人）是点头之交;对…略知一二
to know someone slightly or have a slight knowledge of a subject
She has only a nodding acquaintance with the issues involved. 她对相关问题只是略知一二。
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。