美国人类学协会指出，种族基本上无法用科学方法加以测试及验证。
The American Anthropological Association has stated that race simply cannot be tested or proven scientifically.
1998年美国人类学协会为了邻近种族的杂交而生理上的特征有非常逐渐而不是突然地跨过地理区域感到很紧张。
The American Anthropological Association in 1998 stressed that neighboring populations interbreed and that physical traits tend to vary gradually rather than abruptly over geographic areas.
1998年美国人类学协会为了邻近种族的杂交而生理上的特征有非常逐渐而不是突然地跨过地理区域感到很紧张。
The American Anthropological Association in 1998 stressed that neighboring populations interbreed and that physical traits tend to vary gradually rather than abruptly over geographic areas.
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