Every dog has his day.是什么意思？

Every dog has his day.

凡人都有得意之日。

every

det. 每个，每，所有可能的，充足的；

例句
5,000 people die every year because of accidents in the home...
每年有5,000人死于家中的意外事故。

dog

n. 狗，蹩脚货，丑女人，卑鄙小人；v. 困扰，跟踪；

例句
He dropped his sausage on the pavement and someone's dog ate it, mustard and all.
他把香肠丢在人行道上，不知是谁家的狗将香肠甚至连带芥末都吃个了精光。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

day

n. 一天，白天，时期，节日；adj. 日间的，逐日的；adv. 每天，经常在白天地；

例句
Avant-garde music to this day has not found general public acceptance.
先锋音乐时至今日都没有得到大众的广泛认可。