Strangulated hernia was not uncommon.是什么意思？

Strangulated hernia was not uncommon.

绞窄性疝并不少见.

hernia

n. <医>疝气，突出；

例句
Seventy six cases had assosiated anomalies , consisting mainly of cryptorchidism , hernia , bifid scrotum, and intersex.
在186位患者中,有13位患者的兄弟, 亦有尿道下裂的情形, 亦即家族发生率约6.9%.

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

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

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

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。

uncommon

adj. 不寻常的，罕见的，非凡的，杰出的，非常接近的；

例句
Both are blessed with uncommon ability to fix things.
两人在修理东西上都有一手绝活。