ethnicities

例句:

• There are racists of all ethnicities and skin colors.
  来自SA
• Brazil is a mixture of races and ethnicities, resulting in rich diversity.
  巴西是多个种族广泛融合的国家, 这就形成了丰富的民族多样性.
  
• The two ethnicities have been intermarrying for a long time.
  这两个民族之间向来可以通亲.
  
• Aren't the different ethnicities in Africa intensely enough as it is?
  难道非洲各种族间打的还不够热闹 吗 ?
  
• We're a country of different ethnicities and locations and sensitivities.
  来自WSJ
• In my experience, a certain percentage of students of all ethnicities are guilty of poor study habits.
  来自WSJ