1. ADJ Transient is used to describe a situation that lasts only a short time or is constantly changing. 短暫的[正式]

...the transient nature of high fashion. …最新時尚轉(zhuǎn)瞬即逝的特點。

2. N-COUNT Transients are people who stay in a place for only a short time and then move somewhere else. 流動人員[正式] [usu pl]

...a dormitory for transients. …一個流動人員的宿舍。