ad lib
adverb uk/ˌæd ˈlɪb/ us/ˌæd ˈlɪb/
即兴地;即席地;当场地
said without any preparation or practice
I'd forgotten the notes for my speech so I had to do it ad lib. 我演讲时忘了带稿，只好即兴发挥。
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。