yán / jiū / zhōng / cáng / yǔ / xì / yǒu / zhù / yú / liǎo / jiě / zhè / xiē / yǔ / yán / zhī / jiān / de / lì / shǐ / guān / xì

研究中藏语系有助于了解这些语言之间的历史关系。

Studying the Sino-Tibetan language family helps us understand the historical relationships among these languages.