高加索 transliterates 'Caucasus' — the mountain range and geopolitical region between the Black Sea and Caspian Sea. It is one of the world's most linguistically diverse regions, home to dozens of distinct language families. Note: in Chinese,
高加索 refers to the geographic/ethnic region, not to 'Caucasian' as a race (which is typically
白种人 or
欧美人 in Chinese).