postdeparture为什么字典里查不到?

Question

postdeparture 为什么字典里查不到?

Answer 1

post表示 之后 post war 战后 postgraduate 毕业生
postdeparture 表示离开之后
用法比如：
post departure email 离开后 邮件
顾客在店里消费之后,发个邮件附上调查问卷欢迎下次再来,
Post-Departure Depression 离别感伤
when an individual becomes slightly depressed and generally stagnant as a result of a recent departure from visiting friends in another geographical location.
去外的的朋友家玩儿,离开的时候很不舍得,甚至郁闷.
post departure离开后.