股票价格也从没有像这样，以惊人的速度用绿色光芒的数字在电子磁带上这样上涨、波动、下跌，然后再次波动。

Never have the stock prices, which are flashed in green on the electronic tapes overhead, surged, dipped and surged again with such stupefying speed.

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由于创建全文本索引需要提取文本信息，因而需要从磁带上检索很多对象，这个过程是十分缓慢的，大大影响了创建全文本索引的速度。

Since full-text indexing requires extracting the text information, many object went through a painfully slow retrieval from tape, impacting the speed of full-text indexing.

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在重放的过程中可以改变磁带的速度，以使时间基准拉长或缩短。

By varying the tape speed during playback, the time base can be extended or compressed.

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