"It has been a long-time dream for all optical researchers to reach the terabit per second mark, " says Kuwahara Hideo, one of the 20 researchers at the Fujitsu lab.

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Making cars, as the other big chaebol do, was a long-time dream of Samsung's chairman, Lee Kun Hee, and the company has been taking out newspaper ads swearing it would not give it up.

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"It's been a dream of mine for a long time, " Wallenda told CNN before the Niagara Falls attempt.

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It is a dream we had for a long time.

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It is a dream of mine, something I have held for a long time.

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"It has been a long time coming, " he said, describing his move as a "dream".

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