Complex sentence: Today, the Uyghur Arabic alphabet is the official writing system used for Uyghur in Xinjiang, but other alphabets-the Uyghur Latin and Uyghur Cyrillic alphabets-are still in use outside China, especially Central Asia.
Split into simpler sentences: Today, the Uyghur Arabic alphabet is the official writing system used for Uyghur in Xinjiang. Whereas other alphabets like the Uyghur Latin alphabet and Uyghur Cyrillic alphabets are still in use outside China, especially Central Asia.