The introduction of OPS has improved the use rate of bandwidth and flexibility of network, extended the optical transparency.

光分组交换技术的引入，改善了带宽的利用率和网络的灵活性，延伸了光的透明性。

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Over the past century, human use of fresh water has increased at more than double the rate of population growth.

在过去的一个世纪里，人类对淡水的使用以超过人口增长率两倍的速度增长。

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In places, the water table is declining at a rate of a meter a year, necessitating the periodic deepening of wells and the use of ever-more-powerful pumps.

在一些地方，水位正以每年一米的速度下降，需要定期加深井并使用更强大的水泵。

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If a heart beats too slowly, the device will use electrical signals to help set a normal rate.

VOA: special.2010.06.29

I want to make one other point before we launch into that, and that is the following: that composers use the rate of harmonic change-- whether it's changing or not changing-- to sort of make us feel different ways about the music that we are listening to.

在此之前我还要说一个问题，不管和声有没有改变，作曲家都能通过和声改变的频率-,让我们对所听的音乐有不同的感受-,它能让我们感受到这段音乐。

耶鲁公开课 - 聆听音乐课程节选

If a heart beats too slowly, the pacemaker will use electrical signals to help set a normal rate.

VOA: special.2010.06.02

This use rate puts a premium on getting the financial measures right.

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While more than 230K stores support another form of mobile payments called contactless, the consumer use rate is still far less than 10% of all transactions.

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If interest rates rise, active fixed-income investors could invest in short-term bonds, which tend to remain fairly stable in rising rate environments, or use floating rate funds, which are more insulated from the negative impact of rising rates.

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