Their marriage was unconventional.是什么意思？

Their marriage was unconventional.

他们的婚姻与众不同。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

marriage

n. 结婚，婚姻生活，密切结合，合并；

例句
Rosie's idyllic world came to an abrupt end when her parents' marriage broke up...
父母婚姻的破裂使得罗茜田园诗般美好的世界陡然画上了句号。

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。

unconventional

adj. 非传统的，非常规的，不依惯例的，通脱自喜；

例句
You don't need a Ph.D to decode their work, but they do try to challenge audiences with unconventional material.
解读他们的作品并不需要有博士学位，但他们的确在尝试用一些非传统素材来挑战观众的接受度。