America has a very heterogeneous population.
美国人口是由不同种族组成的。
Cancer has long been viewed as a heterogeneous population of cells.
长时间以来，人们认为肿瘤由异质性肿瘤细胞群构成。
The population of the United States is vast and heterogeneous.
美国人口众多，人种混杂。
The population of the United States is vast and heterogeneous.
美国人口众多，人种混杂。
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