Her precision became a standing joke with colleagues.是什么意思？

Her precision became a standing joke with colleagues.

她事事讲究精确，同事们经常拿这事开玩笑。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

precision

n. 精确度，准确（性），[语]精确；adj. 精确的，准确的，细致的，严守标准的，行动精确的；

例句
...the precision and exactitude of current genetic mapping.
当前遗传图谱的精确严谨

became

v. 变为，成为（ become的过去式 ）；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

standing

n. 起立，站立，身份，地位，持续时间；adj. 长期有效的，直立的，固定的；v. 站立，坚持不变；

例句
He was standing a bit apart from the rest of us, watching us...
他站在离我们其余人不远的地方，看着我们。

joke

n. 笑话，玩笑，笑柄，笑料；vt.& vi. 开玩笑，戏弄，闹着玩，说着玩；

例句
It's bad enough to have anyone joke about such a serious matter but a member of the police force should know better.
拿这么严肃的事情开玩笑已经够糟的了，身为一名警察更不应该这样做。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

colleagues

n. 同事，同僚( colleague的名词复数 )，同人；

例句
His colleagues were aghast at the sackings...
他的同事们对于这些解雇感到很吃惊。