Because every instance in MST runs independently of the other instances on the switch, every instance can have a different priority on the switch and possibly a different root in the MST region.

• 因为每一个实例在MST运行中是独立的区别于其他实例在交换机上，每一个势力能够有一个不同的优先级在交换机和可能有一个不同的根在MST区域。