Original sentence: As transliteration is a system based on the writing system, it may not always reflect colloquial pronunciations.However, pronunciation of Khmer can vary by speaker and region.Transliteration, where one script is mapped onto another.When using transcription, words would be romanized based on the pronunciation
Edited sentence: As transliteration is a system based on the writing system, it may not always reflect the true pronunciation.Transliteration, where one script is mapped onto another, is the most common form of romanization for Khmer.When using transcription, words would be romanized based on the pronunciation, but pronunciation of Khmer can vary by speaker