transient: applies to what is actually short in duration or stay: a hotel catering Primarily to ~ guests.


transitory: applies to what is by its nature or essense bound to change, pass, or come to an end: fame in the movies is ~.


ephemeral: implies brevity of life or duration: much slang is ~.


momentary: suggests coming and going quickly, often merely as a brief interruption of a more enduring state or course: my feelings of guilt were only ~. President Trump met Yang Jiechi momentarily(表示特朗普过来见了杨洁篪一面，很快就中途离开).


fugitive: implies passing so quickly as to make apprehending difficult: in winter the days are short and sunshine is ~.


fleeting: is close to fugitive but stresses the difficulty or impossibility of holding back from flight: a life with only ~ moments of joy.


evanescent: suggests momentary existence, a quick vanishing, and an airy or fragile quality: the story has an ~ touch of whimsy that is lost on stage.


short-lived: implies extreme brievity of life or existence, often of what might be expected to last or live longer: ~ satisfaction.


transient: 事实上或者叫实际上短暂，transitory:本质上注定改变度过结束, ephemeral:生命或持续期短暂，momentary:来去很快，停留很短，常只是对其他活动的一次打断， fugitive:快速经过难以抓住，fleeting: 意思类似，强调难以停止挽留，evanescent: 形容短暂存在、转瞬消失、飘渺脆弱，short-lived: 本希望更长久一些，通常都指美好的事物


记忆方法：1）TEMFFES调整顺序为TM FEETFS: 时间的脚步飞逝<==人生短暂

         2）短暂的意思是持续或停留时间短mean lasting or staying only a short time.