adj. 种族的;人种的
ethnic 种族的
来自PIE*swedh, 自己,来自*swe的扩大形式,词源同self, idiom, custom. 即自家的,本族的。
Although the term 'ethnic cleansing' has come into English usage only recently, its verbal correlates in Czech, French, German, and Polish go back much further. [Jerry Z. Muller, "Us and Them: The Enduring Power of Ethnic Nationalism," Foreign Affairs, March/April 2008]