1 leaving or going away from a place 离开;出发:
Helen's sudden departure meant I had to do her job as well as mine.海伦突然离去,这意味着她的活儿和我自己的活儿都得由我来干。Passengers should check in at least one hour before departure.乘客须于起飞前最少一小时办理登机手续。☞verb depart 动词为depart
2a departure (from sth) an action which is different from what is usual or expected 背离;违背:
a departure from normal practice违反常规