The number of juveniles in the generalpopulation has fallen by a fifth in the past 10 years.
在过去的10年中,青少年在总人口中所占的比重下降了1/5。
《柯林斯英汉双解大词典》
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"In the generalpopulation today, at this genetic, environmental level, we've pretty much gone as far as we can go," says anthropologist William Cameron Chumlea of Wright State University.