roughly [rʌfli] adv. 大約、大概地；粗略地
It takes roughly four hours to drive to my hometown from here.
從這裡開車到我家鄉大概要四小時。

definitely [dɛfənɪtli] adv. 當然、一定、確切地
I will definitely need your help to finish this project.
我一定會需要你的幫忙來完成這個專案。