on the fly
1 while in motion.
2 while busy or active.
3 (of an addition or modification in computing) carried out during the running of a program without interrupting the run.
英语词组固定搭配大全包含15956条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。