Complex sentence: Chocangacakha is a "sister language" to Dzongkha, however under pressure to assimilate into the mainstream Dzongkha-speaking Ngalop culture, this proximity has resulted in significant loss of its particularly distinctive Kurichu linguistic substrate.
Split into simpler sentences: Chocangacakha is a "sister language" to Dzongkha. Under pressure to assimilate into the mainstream Dzongkha-speaking Ngalop culture, this proximity has resulted in significant loss of its particularly distinctive Kurichu linguistic substrate.