populations [pɒpjʊ'leɪʃnz]

例句:

• Interesting distinctions can be drawn between the two populations.
  比较两类人可以发现有趣的差异。
  来自柯林斯例句
• The ethnic populations are so intermingled that there's bound to be conflict.
  各民族人口如此杂居，肯定会发生冲突。
  
• He says those drugs were discovered by native populations.
  来自VOA
• Lemming populations also undergo periodic boom and bust cycles.
  来自BBC
• This policy has led to a dramatic increase in our prison populations.
  这项政策已经让我们监狱的囚犯人数激增。
  
• These founder bugs go on to create larger populations.
  来自SA