firm something up
phrasal verb with firm verb uk/fɜːm/ us/fɝːm/
落实;敲定
to make something more certain or less likely to change
Could we have a meeting so we can firm up the details of our agreement? 我们能不能开个会，把协议细节确定下来？
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。