Complex sentence: This honor is generally bestowed on reincarnated lamas (Tulkus) by default; in other cases it is earned over time, and often bestowed spontaneously by the teacher's students.
Split into simpler sentences: This honor is generally bestowed on reincarnated lamas, or Tulkus, by default. In other cases it is earned over time, and often bestowed spontaneously by the teacher's students.