起程，啟程，動(dòng)身，出發(fā)

四種表達(dá)出發(fā)的英語(yǔ)分別是：leave, set off, set out, start off。

set off, depart, leave, start out

To begin a journey or session, one might say their departure is: Setting forth on the venture or occasion. To propel oneself into action, phrase it as: Starting the initiative or event.