Total television advertising has grown sevenfold since 2001.
自2001年以来，整体电视广告业已经成长了七倍。
A 70-fold increase in speed for a sevenfold increase in price would seem a bargain.
速度增加70倍，价格才涨了7倍，似乎很划得来。
A 70-fold increase in speed for a sevenfold increase in price would seem a bargain.
速度增加70倍，价格才涨了7倍，似乎很划得来。
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