cohabitation

例句：

1. 1. They have been living together for over a decade now.
   他们已经同居十多年了。
2. 2. The couple decided to share their home with a roommate.
   这对夫妇决定与室友共享他们的家。
3. 3. Cohabitation is becoming more common in urban areas due to the rise of co-living spaces.
   由于共享空间的兴起，城市地区的共同生活变得越来越普遍。