People are already playing casual games, in big numbers, and for long periods of time.

已经有大量的人在玩休闲游戏，玩游戏的时间也很长。

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For example, [" best books 2002.". 2007] will return lists of best books for each of the years from 2002 to 2007 (note the two periods between the two Numbers).

例如，[“ best books 2002 .” . 2007]会列出2002年到2007年间每年最好的书(注意两个数字间有两个英文句号)。

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For the same initial amplitudes, the periods are becoming short, the three waves are gradually becoming instability, and the time of strong interaction is shorting with increasing of wave Numbers.

对于相同的初始扰动振幅，随着波数的增加，低频振荡周期缩短，三波逐渐变得不稳定，三波之间较强的相互作用时间缩短。

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Correlations are not static numbers, however, and periods of higher correlations have historically been followed by periods of lower correlations.

FORBES: Current Highly Correlated Stock Returns Are Temporary

Librarian of Congress James Billington is advocating a first-rate idea to help democracy sink long-term roots in Russia: Bring large numbers of younger generation Russians to the U.S. for extended periods of time.

FORBES: Fact and Comment

However, their opponents say this has been achieved at the expense of a huge jump in the numbers waiting long periods just to see their consultant.

BBC: Milburn attacks waiting list 'fiddles'