The idea is that couples thinking of splitting up will receive a timely reminder of why they got together in the first place.

此举是为了七年之痒到来之时，想要分手的夫妻能够得到一个及时的提醒，告诉他们当初为何选择在一起。

youdao

Between 2000 and 2006, the average length of time that cohabiting couples spent together before splitting up or marrying also rose by four months to 6.9 years.

从2000年到2006年，同居的情侣最终分手或是结婚时已共同生活的时间从四个月增加到6.9年。

youdao

So, instead of finding separate wives and splitting up their inherited property, the brothers marry the same woman and keep their land together.

为了不因兄弟各自娶妻将来瓜分财产，兄弟们娶同一个老婆使土地得以保全。

youdao

The most common reason for splitting up was that the couples had not lived together for the last year.

BBC: Scottish divorce rate falls by 2% to 9,453