black-onCOCA³¹⁵¹¹¹⁺⁴ 例句 At the end of the80s, a monthly average of100 black South Africans were killed in black-on- black violence, and between1990-1993 an average of259 blacks per month were killed. 80年代末，在南非每月平均有100名黑人因黑人内部相互的暴力斗争而丧生，1990-1993年之间，每月平均有259名黑人因此而丧生。2muslim