No other demographic group texts as much as teens do, with an average of 3, 339 texts sent and received per month.
没有其他人群多达十几岁的文本,平均为3,339文本发送和接收每月。
In 2009 key demographic group ratings for network 10 P.M.shows were just half of what they had been five years earlier.
2009年晚间10点档节目的电视网络收视率只有五年前的一半。
Researchers say women who seek abortions come from a demographic group more likely to have emotional problems to begin with.
研究者称那些选择堕胎的妇女首先在统计学上意义上就属于更易于有情绪问题的人群。
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