In the secondvariation, called the "vertical archipelago", the village exploits resources in widely dispersed locations, constituting a series of independent production "islands".
第二种变异称为“垂直群岛”，村庄在广泛分散的地点开发资源，构成一系列独立生产的“岛屿”。
2
In the secondvariation, writing a row means modifying an existing row.
在第二个变体中，写一行意味着修改一个现有的行。
3
The secondvariation, linear or nonlinear, gives the criteria of instability.